MRT installed!
5th Gear Member
Joined: Sep 2005
Posts: 2,750
From:
RE: MRT installed!
ORIGINAL: Pyrat
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
2nd Gear Member
Joined: Nov 2006
Posts: 166
From:
RE: MRT installed!
ORIGINAL: scrming
I know it's hard to believe that adding a AT could be better than no muffler. I know I certainly diddn't believe it was possible... I was very very skeptical! From AT's website:
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
ORIGINAL: Pyrat
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
17 rwhp???? John come on I don’t believe it very highly unlikely your going to pick up 17 rwhp ( you are telling members) esp after reading the tuner (VMP) thread over at V6 power forum on his exhaust dyno testing. You didn’t do back to back dynos on the same day your dyno tests are not valid on the MRT in my opinion. The test needs to be done back to back on the same day not weeks or months apart!
I don’t mean to offend you with the above just IMO so hope you don't take it the wrong way.
5th Gear Member
Joined: Sep 2005
Posts: 2,750
From:
RE: MRT installed!
ORIGINAL: Krazer
17 rwhp???? John come on I don’t believe it I don’t mean to pick on you lately John but very highly unlikely your going to pick up 17 rwhp ( you are telling members) esp after reading the tuner over at V6 power forum. You didn’t do back to back dynos on the same day your dyno tests are not valid on the MRT in my opinion. The test needs to be done back to back on the same day not weeks or months apart!
Sorry don’t mean to offend you with the above.
ORIGINAL: scrming
I know it's hard to believe that adding a AT could be better than no muffler. I know I certainly diddn't believe it was possible... I was very very skeptical! From AT's website:
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
ORIGINAL: Pyrat
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
17 rwhp???? John come on I don’t believe it I don’t mean to pick on you lately John but very highly unlikely your going to pick up 17 rwhp ( you are telling members) esp after reading the tuner over at V6 power forum. You didn’t do back to back dynos on the same day your dyno tests are not valid on the MRT in my opinion. The test needs to be done back to back on the same day not weeks or months apart!
Sorry don’t mean to offend you with the above.
Now as far as my testing... True they were not done back to back.. BUT... it was winter so even though they weren't done back to back, the car was inside the shop so the enviromentals were pretty much the same... The numbers are also SAE corrected which takes things like temp, air pressure, etc. into account and correct for it.. We also made sure things like coolant temps were the same... Lidio and I did our very best to make the comparisons as fair as possible.
Bottom line it is my OPINION that the MRT AT will out peform any other axle-back on the market today... I have no vested interest... I paid for my MRT AT... I paid for the dyno time (at Alternative Auto NOT MRT) Basically boils down to either you believe me or you don't... For those of you that don't believe me.... oh, well... I know what I know and I'll stand by everything I've said...
2nd Gear Member
Joined: Nov 2006
Posts: 166
From:
RE: MRT installed!
ORIGINAL: scrming
I've never said 17... I said that i picked up 7RWHP over my Magaflow... And even back to back testing doesn't prove anything! Look at the ASP UD claim! They claim 12RWHP but Doug and others have shown no more than 6rwhp! Anyone that is doing dyno testing can make the results come out any way they want to! Like I said I could do back to back testing and post dyno sheets showing what ever I want to!
Now as far as my testing... True they were not done back to back.. BUT... it was winter so even though they weren't done back to back, the car was inside the shop so the enviromentals were pretty much the same... The numbers are also SAE corrected which takes things like temp, air pressure, etc. into account and correct for it.. We also made sure things like coolant temps were the same... Lidio and I did our very best to make the comparisons as fair as possible.
Bottom line it is my OPINION that the MRT AT will out peform any other axle-back on the market today... I have no vested interest... I paid for my MRT AT... I paid for the dyno time (at Alternative Auto NOT MRT) Basically boils down to either you believe me or you don't... For those of you that don't believe me.... oh, well... I know what I know and I'll stand by everything I've said...
ORIGINAL: Krazer
17 rwhp???? John come on I don’t believe it I don’t mean to pick on you lately John but very highly unlikely your going to pick up 17 rwhp ( you are telling members) esp after reading the tuner over at V6 power forum. You didn’t do back to back dynos on the same day your dyno tests are not valid on the MRT in my opinion. The test needs to be done back to back on the same day not weeks or months apart!
Sorry don’t mean to offend you with the above.
ORIGINAL: scrming
I know it's hard to believe that adding a AT could be better than no muffler. I know I certainly diddn't believe it was possible... I was very very skeptical! From AT's website:
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
ORIGINAL: Pyrat
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
Fist off Scrming has done an excellent job of documenting the modifications he's made to his car and from reading his web site I think it is readily apparent that what he reports is based on his experience with the products and not on an association with any particular shop. I thank you for a job well done, it is an excellent resource for the all of us.
I do question the claims made on the AT muffler though. Scrming reported, if memory serves, a 10 HP increase estimate with his first muffler change and 7 more (dynoed) with the AT for a total gain of 17 RWHP. While I'm kind of concerned about the loudness of the AT (A yellow Mustang attracts enough attention from the Man without blasting him with exhaust noise) I was very interested in the HP gain. Then I read where Justin at VMP had dynoed Rebecca's V6 with no muffler and only recorded an 11 HP gain. That means the AT is making more HP than a straight pipe, which is difficult to conceptualize. I have also raced sailboats so I'm intimately familiar with the application of Bernoulli's principal. An airfoil like a airplane wing or a sail, develops lift (a low pressure area) above the curved surface of the airfoil by forcing air to accelerate over the curve in order to arrive at the trailing edge at the same time air passing under the foil does. However, there is an inherent drag caused by the airfoil itself, so there is an energy loss. I do not see how the AT muffler, or any muffler for that matter, could accelerate the exhausts gasses exiting your tailpipe and increase power beyond that which the same system sans the muffler could produce. I could see that they could accelerate a portion of the flow through the muffler between two points inside the muffler, but the exit velocity should be affected by such movement and result in disturbed exit flow and less HP. It would therefore seem that any muffler will cause some loss of power.
When the incoming exhaust air stream enters the Aero Exhaust it is rapidly expanded and split via an airfoil cone with an orifice similar to a jet engine. The outer airflow velocity is increased due to the increased distance the outer air must travel. The higher density inner air stream also creates a low pressure vacuum in the outer expansion chamber that assists in drawing the air out of the exhaust pipe. The outer air stream accelerates as it recombines with the inner air stream. The recombining of the air streams muffles the exhaust sound and increases the exhaust flow. Thus allowing your engine to breathe easier and dramatically increases your vehicles performance.
Sounded like complete hog-wash to me... but my butt dyno said the gains were there and Lidio's DynoJet said the gains were there... I'm not an engineer so at this point I just "know" that the AT works... I don't care how... i just like the increase performance and the better sound! LOL
17 rwhp???? John come on I don’t believe it I don’t mean to pick on you lately John but very highly unlikely your going to pick up 17 rwhp ( you are telling members) esp after reading the tuner over at V6 power forum. You didn’t do back to back dynos on the same day your dyno tests are not valid on the MRT in my opinion. The test needs to be done back to back on the same day not weeks or months apart!
Sorry don’t mean to offend you with the above.
Now as far as my testing... True they were not done back to back.. BUT... it was winter so even though they weren't done back to back, the car was inside the shop so the enviromentals were pretty much the same... The numbers are also SAE corrected which takes things like temp, air pressure, etc. into account and correct for it.. We also made sure things like coolant temps were the same... Lidio and I did our very best to make the comparisons as fair as possible.
Bottom line it is my OPINION that the MRT AT will out peform any other axle-back on the market today... I have no vested interest... I paid for my MRT AT... I paid for the dyno time (at Alternative Auto NOT MRT) Basically boils down to either you believe me or you don't... For those of you that don't believe me.... oh, well... I know what I know and I'll stand by everything I've said...
Anyone that is doing dyno testing can make the results come out any way they want to!
Basically boils down to either you believe me or you don't..
John I am not trying to argue with you or insult you but when I find something hard to believe or don't agre I have to step in and say something or debate it.
5th Gear Member
Joined: Sep 2005
Posts: 2,750
From:
RE: MRT installed!
ORIGINAL: Krazer
I agree if someone wanted to fudge dyno results they could, but if someone tested back to back test and was honest you would get good data on the test vs you testing months apart.
John I am not trying to argue with you or insult you but when I find something hard to believe or don't agre I have to step in and say something or debate it.
I agree if someone wanted to fudge dyno results they could, but if someone tested back to back test and was honest you would get good data on the test vs you testing months apart.
John I am not trying to argue with you or insult you but when I find something hard to believe or don't agre I have to step in and say something or debate it.
I stand by what I've said... you don't believe me that's fine... I was skeptical too.... The only way you'll be convinced is to put one on your car and see if you notice that differnce...
3rd Gear Member
Joined: Aug 2005
Posts: 529
From:
RE: MRT installed!
Scrming, sorry, didn't mean to get you in an argument. I thought your old web site said you estimated a 10 HP increase with your first muffler, then dynoed a 7 HP increase with the AT. My apologies if I was inaccurate on this.
I almost bought one of the used ATs offered on the forum just so I could test it on a dyno (stock vs no muffler vs AT). Justin mentioned he might try this, but hasn't got around to it yet. (Justin, in case you're out there, inquiring minds want to know [sm=smiley1.gif] ).
I almost bought one of the used ATs offered on the forum just so I could test it on a dyno (stock vs no muffler vs AT). Justin mentioned he might try this, but hasn't got around to it yet. (Justin, in case you're out there, inquiring minds want to know [sm=smiley1.gif] ).
5th Gear Member
Joined: Sep 2005
Posts: 2,750
From:
RE: MRT installed!
ORIGINAL: Pyrat
Scrming, sorry, didn't mean to get you in an argument. I thought your old web site said you estimated a 10 HP increase with your first muffler, then dynoed a 7 HP increase with the AT. My apologies if I was inaccurate on this.
I almost bought one of the used ATs offered on the forum just so I could test it on a dyno (stock vs no muffler vs AT). Justin mentioned he might try this, but hasn't got around to it yet. (Justin, in case you're out there, inquiring minds want to know [sm=smiley1.gif] ).
Scrming, sorry, didn't mean to get you in an argument. I thought your old web site said you estimated a 10 HP increase with your first muffler, then dynoed a 7 HP increase with the AT. My apologies if I was inaccurate on this.
I almost bought one of the used ATs offered on the forum just so I could test it on a dyno (stock vs no muffler vs AT). Justin mentioned he might try this, but hasn't got around to it yet. (Justin, in case you're out there, inquiring minds want to know [sm=smiley1.gif] ).
Now enter the AT... In my OPINION I gained 7RWHP over top of my Magnaflow. I felt it and the dyno showed it.... I have never said add 10 + 7 and get 17RWHP... Unforunately we never did a dyno test of the stock vs the AT... Now... here is the part people can't believe... how can an AT muffler out perform NO muffler? Like I said, I'm not an engineer... but based on the AT design theory, it CAN deliever better performance than no muffler at all... it's all about the physics...
Now.. will an AT give you 17RWHP over stock? I don't know... will it give you better performance than no muffler? Yes, I honestly believe it will. Look at the dyno sheet... notice how the Magaflow dropped off quicker then the AT... to me that show that the Bernoulli effect is alive and well...
Maybe some day when I'll convice Scott we need to go out and rent a Mustang and do some back to back testing on a 100% Mustang... LOL!
2nd Gear Member
Joined: Nov 2006
Posts: 166
From:
RE: MRT installed!
John I have a suggestion since you seem to be good friends with Scott from MRT and since Justin from VMP said he would like to test the MRT on their Stang, why not have Scott ship Justin a MRT for testing only and Justin could ship it back?
Then we would have a 3rd party dyno test which would be very valid. I mean if I am Scott this is a no brainier and I would jump at this and I think VMP would be willing.
One other thing I want to mention when I researched the AT a while ago now if I remember correctly this muffler is supposed to be installed midway in the exhaust system for it to work by helping (if true what AT says) pushing the exhaust out faster through the piping from mid point to the tail outlet. The AT from MRT is installed at the end of the exhaust system so its not working or doing what it supposedly design to do properly which is to help the exhaust scavenge faster from the mid point of the exhaust system pipe and thought the rest of system out tailpipe.
Then we would have a 3rd party dyno test which would be very valid. I mean if I am Scott this is a no brainier and I would jump at this and I think VMP would be willing.
One other thing I want to mention when I researched the AT a while ago now if I remember correctly this muffler is supposed to be installed midway in the exhaust system for it to work by helping (if true what AT says) pushing the exhaust out faster through the piping from mid point to the tail outlet. The AT from MRT is installed at the end of the exhaust system so its not working or doing what it supposedly design to do properly which is to help the exhaust scavenge faster from the mid point of the exhaust system pipe and thought the rest of system out tailpipe.
5th Gear Member
Joined: Sep 2005
Posts: 2,750
From:
RE: MRT installed!
ORIGINAL: Krazer
John I have a suggestion since you seem to be good friends with Scott from MRT and since Justin from VMP said he would like to test the MRT on their Stang, why not have Scott ship Justin a MRT for testing only and Justin could ship it back?
Then we would have a 3rd party dyno test which would be very valid. I mean if I am Scott this is a no brainier and I would jump at this and I think VMP would be willing.
One other thing I want to mention when I researched the AT a while ago now if I remember correctly this muffler is supposed to be installed midway in the exhaust system for it to work by helping (if true what AT says) pushing the exhaust out faster through the piping from mid point to the tail outlet. The AT from MRT is installed at the end of the exhaust system so its not working or doing what it supposedly design to do properly which is to help the exhaust scavenge faster from the mid point of the exhaust system pipe and thought the rest of system out tailpipe.
John I have a suggestion since you seem to be good friends with Scott from MRT and since Justin from VMP said he would like to test the MRT on their Stang, why not have Scott ship Justin a MRT for testing only and Justin could ship it back?
Then we would have a 3rd party dyno test which would be very valid. I mean if I am Scott this is a no brainier and I would jump at this and I think VMP would be willing.
One other thing I want to mention when I researched the AT a while ago now if I remember correctly this muffler is supposed to be installed midway in the exhaust system for it to work by helping (if true what AT says) pushing the exhaust out faster through the piping from mid point to the tail outlet. The AT from MRT is installed at the end of the exhaust system so its not working or doing what it supposedly design to do properly which is to help the exhaust scavenge faster from the mid point of the exhaust system pipe and thought the rest of system out tailpipe.
Justin's wife's Mustang is now blown so that's not going to really work...
Of course I think Scott sells enough AT's based on their great sound... I think performance gains are more or less just a bonus... I mean most people in here probably don't care if the AT is 10RWHP gain or 17RWHP...
I've shown the AT outperforms the Magaflow... let someone else spend their own money to disprove it...
Joined: Feb 2006
Posts: 26
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RE: MRT installed!
A resonator helps big time! I installed one on missysmustang after putting together a custom exhaust. It needs to be welded in place in the section of pipe that runs along side the driveshaft. Patience, planning, and clearance. I don't have any pics of the resonator on the car. It was just put up for the winter. But here's a link to the one I bought.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
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Sep 10, 2015 08:39 PM