trumpeting with pypes mid muffler and stock H?
08-17-2012, 10:57 PM
#21
2nd Gear Member
Join Date: Jul 2012
Location: Naples, Florida
Posts: 185
I've read about trumpeting with offroad h pipes and axle backs, but not so much with mid muffler and stock catted H pipe. It really sounds bad if i'm next to a curb.
So what are my options to get a nice deep tone? When I first installed the mid mufflers, it was before the whipple and I don't remember having this irritating exhaust tone. For those not familiar with the sound in question, I believe it is what you hear in my video at 1:17 and 2:02. It only does it in a certain rpm range and part throttle, for the most part. It's most noticeable to me shifting from 1st to 2nd, because I have to feather the throttle to keep the tires from spinning.
http://www.youtube.com/watch?v=OPBIVJYw3d4
Everyone with offroad pipes use resonators to eliminate the sound, but what about resonated exhaust tips? Maybe worth a shot.
So what are my options to get a nice deep tone? When I first installed the mid mufflers, it was before the whipple and I don't remember having this irritating exhaust tone. For those not familiar with the sound in question, I believe it is what you hear in my video at 1:17 and 2:02. It only does it in a certain rpm range and part throttle, for the most part. It's most noticeable to me shifting from 1st to 2nd, because I have to feather the throttle to keep the tires from spinning.
http://www.youtube.com/watch?v=OPBIVJYw3d4
Everyone with offroad pipes use resonators to eliminate the sound, but what about resonated exhaust tips? Maybe worth a shot.
08-17-2012, 11:01 PM
#22
2nd Gear Member
Join Date: Jul 2012
Location: Naples, Florida
Posts: 185
OMG my high school memories of a RX7 have been destroyed with that horrible video!! My God can a car sound any worse than that? NO........lol
Please do not consider that piece of crap. If you want a cheap solution try these.
http://www.ebay.com/itm/2005-2009-MU...ht_1213wt_1021
I picked up a new used set for $125 locally here. Its a flow thru muffler, you can see right through it. Its very deep and the finish is a freaking mirror. Have had them on the car for at least 6 months and its still shiny as new. The hangers on mine were a little off but I was able to hang em straight.
Here is a video but my camara does not pick up the low frequencies so you cant hear how deep it is. I have cams, longtubes, pypes m80s with cherry bomb glasspacks mid mounted and then the Nxt step axlebacks. My idle is very deep and throaty. Cruising around you can hear it in the car but not a overwhelming drone at all. At WOT its nice and loud. They are well worth the price.
http://www.youtube.com/watch?v=YHQueteziRE
Please do not consider that piece of crap. If you want a cheap solution try these.
http://www.ebay.com/itm/2005-2009-MU...ht_1213wt_1021
I picked up a new used set for $125 locally here. Its a flow thru muffler, you can see right through it. Its very deep and the finish is a freaking mirror. Have had them on the car for at least 6 months and its still shiny as new. The hangers on mine were a little off but I was able to hang em straight.
Here is a video but my camara does not pick up the low frequencies so you cant hear how deep it is. I have cams, longtubes, pypes m80s with cherry bomb glasspacks mid mounted and then the Nxt step axlebacks. My idle is very deep and throaty. Cruising around you can hear it in the car but not a overwhelming drone at all. At WOT its nice and loud. They are well worth the price.
http://www.youtube.com/watch?v=YHQueteziRE
08-17-2012, 11:19 PM
#23
Join Date: Aug 2012
Location: Florida
Posts: 4
MIL?
Hello,
While I may not be much help with your sound, I wonder how you solved the MIL problem by running your exhaust without any cat's? I have no cat's on my Pypes system and have bunged the back 2 oxygen sensors and still can't get the MIL to stay off. All 4 sensors are new.
Anyone have any suggestions?
Thank-you,
The Bulldog1881
While I may not be much help with your sound, I wonder how you solved the MIL problem by running your exhaust without any cat's? I have no cat's on my Pypes system and have bunged the back 2 oxygen sensors and still can't get the MIL to stay off. All 4 sensors are new.
Anyone have any suggestions?
Thank-you,
The Bulldog1881
08-18-2012, 04:09 AM
#24
6th Gear Member
Thread Starter
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
Hello,
While I may not be much help with your sound, I wonder how you solved the MIL problem by running your exhaust without any cat's? I have no cat's on my Pypes system and have bunged the back 2 oxygen sensors and still can't get the MIL to stay off. All 4 sensors are new.
Anyone have any suggestions?
Thank-you,
The Bulldog1881
While I may not be much help with your sound, I wonder how you solved the MIL problem by running your exhaust without any cat's? I have no cat's on my Pypes system and have bunged the back 2 oxygen sensors and still can't get the MIL to stay off. All 4 sensors are new.
Anyone have any suggestions?
Thank-you,
The Bulldog1881
08-18-2012, 08:40 PM
#26
6th Gear Member
Thread Starter
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
I swapped the 4 inch (18 inch long) resonated tips for some 3 inch non-resonated tips. both are slash cut and 18 inches long. Surprisingly, even the non-resonated tips seem to reduce the trumpeting compared to the short 4 inch rolled tips from pypes. I think it's because of less 2.5 inch pipe in the system now. The pypes mid muffler system is basically 2.5 inch pipe all the way to the bumper with some really short 4 inch tips. The resonated tip is just too damn quiet, but i'm not done with it. I'm going to take out the resonators and see how the 4 inch tips sound. I'm thinking the longer, larger diameter the tip is, the deeper the tone. Wish I had gotten the 22 inch long tips.
08-18-2012, 10:07 PM
#27
Join Date: Aug 2012
Location: Florida
Posts: 4
thanks moosestang, being new to the mustang world is brenspeed a tuner, a device or both? did you just block off the first two O2 sensors? sorry for all the questions, but your answer is the most logical I have gotten..
bulldog1881
bulldog1881
08-19-2012, 06:55 AM
#28
6th Gear Member
Thread Starter
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
I left the other rear 02 sensor hooked up to fill the hole, but they are not active in my tune. Who's tune do you have? You say all 4 sensors are new, so you have the rear 02 sensors just hanging under the car?
The Mil eliminators only work on the 05-06 cars I think.
08-19-2012, 08:50 PM
#29
Join Date: Aug 2012
Location: Florida
Posts: 4
no, all 4 02 sensors are hooked up. the two in the back are "bunged" so they are not as far in the pipe as the first two are. that was done to decrease the amount of heat they saw based on the thought that if the cat's were there, they wouldn't see the amount of heat that the front ones saw and try to "fool" the brain.
as for the tune, unfortunately a buddy of mine bought the car at an auction, and i bought it from him. the word was that the previous owner put some 12grand into the engine and my guess is because of the mil problem got tired of it and sold the car. i can tell you this, i think it has been balanced as there is no engine vibration at all.. once the car warms up then there's no issue with the way the car runs, just trying to kill the mil.
your right, the mil eliminators aren't made for an 07....
last resort would be to install hi performance cats and hope that works.
bulldog
as for the tune, unfortunately a buddy of mine bought the car at an auction, and i bought it from him. the word was that the previous owner put some 12grand into the engine and my guess is because of the mil problem got tired of it and sold the car. i can tell you this, i think it has been balanced as there is no engine vibration at all.. once the car warms up then there's no issue with the way the car runs, just trying to kill the mil.
your right, the mil eliminators aren't made for an 07....
last resort would be to install hi performance cats and hope that works.
bulldog
08-20-2012, 04:04 AM
#30
6th Gear Member
Thread Starter
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
I would just buy a CAI and tuner from one of the big mustang websites like americanmuscle.com , brenspeed.com , vmptuning.com and have the rear 02's turned off. They can turn the car so the mil doesn't come on or just shut off the rear 02's since they are just there to check cat efficiency.
Does the car have the stock air box? Make another post with a picture of the engine. You may have a custom tune on the car all ready.
Does the car have the stock air box? Make another post with a picture of the engine. You may have a custom tune on the car all ready.