adding hp
3rd Gear Member
Joined: Jul 2007
Posts: 889
From: Brownstown, Michigan
RE: adding hp
Having an Auto does not necessarily mean you lose that much HP.
I have an auto on my 2008 GT plus Q350 Steeda Package and I am guaranteed 350 RWHP and 370 RWTQ. I will be verifying these numbers this April when I take her to the Steeda Dyno and Track. But that's what they promised in writing and I do not have an SC or Turbo - YET!
I have most everything that 06Saleen and other mention but I also have 4.10's. The engineers at Steeda said that the 07 is slightly less in HP with all the same mod's that I have @15RWHP. Not sure why or what the differences are on the 2005 - 2007 4.6 vs. the 2008. I am still trying to get answers about what the differences are.
I know the valve covers are different and the Whipple HO SC that fit the 2005 - 2007 won't work on an 08. ButI have no specifics why yet.
I am adding a Whipple HO SC with 8 PSI as soon as they release the 08 model through Steeda.
I have an auto on my 2008 GT plus Q350 Steeda Package and I am guaranteed 350 RWHP and 370 RWTQ. I will be verifying these numbers this April when I take her to the Steeda Dyno and Track. But that's what they promised in writing and I do not have an SC or Turbo - YET!
I have most everything that 06Saleen and other mention but I also have 4.10's. The engineers at Steeda said that the 07 is slightly less in HP with all the same mod's that I have @15RWHP. Not sure why or what the differences are on the 2005 - 2007 4.6 vs. the 2008. I am still trying to get answers about what the differences are.
I know the valve covers are different and the Whipple HO SC that fit the 2005 - 2007 won't work on an 08. ButI have no specifics why yet.
I am adding a Whipple HO SC with 8 PSI as soon as they release the 08 model through Steeda.
s197 Junkie
Joined: Sep 2006
Posts: 16,088
From: IN
RE: adding hp
They would have to alter the dyno go get you 350 @ the wheels with the q350 package
From the release i saw about the Q350
-Steeda CAI/Tune
-UDPs
-"Special" headers and exhaust
-CMCV
There is no way with those mods you get 350 to the wheels, maybe 320-325, but i have never seen anyone with out heads or cams come anywhere close to 350. Taking it to STEEDAS DYNO is not the way to check the numbers. Find a reputable shop around and test it there and see what the results are.
From the release i saw about the Q350
-Steeda CAI/Tune
-UDPs
-"Special" headers and exhaust
-CMCV
There is no way with those mods you get 350 to the wheels, maybe 320-325, but i have never seen anyone with out heads or cams come anywhere close to 350. Taking it to STEEDAS DYNO is not the way to check the numbers. Find a reputable shop around and test it there and see what the results are.
3rd Gear Member
Joined: Jul 2007
Posts: 889
From: Brownstown, Michigan
RE: adding hp
That's kinda whatI thought too! But they put it in writing on my purchase agreement. So I will do the Steeda Stampede in April and also do a dyno shop on my own. If it comes up short then I will pitch a real fit.
My car is supposed to be on display at some Steeda displays at dealerships and shows too. So I hope they are for real! I am a bit skeptical but I will give them the benefit of the doubt until proven otherwise.
It also has other goodies besides what you mention for the Q350. At least mine does. Mine was the first 2008 and the first Q350. Matter of fact they still had the Q335 package listed when mine was built as a Q350.
But we will see! I still only have just a little over 600 miles on her so no romping yet (Although I did a couple of run's against some other cars after the first 400 miles, shame on me!). Not to mention she is tucked away from the salt and snow here in Michigan.
My car is supposed to be on display at some Steeda displays at dealerships and shows too. So I hope they are for real! I am a bit skeptical but I will give them the benefit of the doubt until proven otherwise.
It also has other goodies besides what you mention for the Q350. At least mine does. Mine was the first 2008 and the first Q350. Matter of fact they still had the Q335 package listed when mine was built as a Q350.
But we will see! I still only have just a little over 600 miles on her so no romping yet (Although I did a couple of run's against some other cars after the first 400 miles, shame on me!). Not to mention she is tucked away from the salt and snow here in Michigan.
2nd Gear Member
Joined: Jan 2008
Posts: 334
From:
RE: adding hp
ORIGINAL: 08Steeda
Having an Auto does not necessarily mean you lose that much HP.
I have an auto on my 2008 GT plus Q350 Steeda Package and I am guaranteed 350 RWHP and 370 RWTQ. I will be verifying these numbers this April when I take her to the Steeda Dyno and Track. But that's what they promised in writing and I do not have an SC or Turbo - YET!
I have most everything that 06Saleen and other mention but I also have 4.10's. The engineers at Steeda said that the 07 is slightly less in HP with all the same mod's that I have @15RWHP. Not sure why or what the differences are on the 2005 - 2007 4.6 vs. the 2008. I am still trying to get answers about what the differences are.
I know the valve covers are different and the Whipple HO SC that fit the 2005 - 2007 won't work on an 08. ButI have no specifics why yet.
I am adding a Whipple HO SC with 8 PSI as soon as they release the 08 model through Steeda.
Having an Auto does not necessarily mean you lose that much HP.
I have an auto on my 2008 GT plus Q350 Steeda Package and I am guaranteed 350 RWHP and 370 RWTQ. I will be verifying these numbers this April when I take her to the Steeda Dyno and Track. But that's what they promised in writing and I do not have an SC or Turbo - YET!
I have most everything that 06Saleen and other mention but I also have 4.10's. The engineers at Steeda said that the 07 is slightly less in HP with all the same mod's that I have @15RWHP. Not sure why or what the differences are on the 2005 - 2007 4.6 vs. the 2008. I am still trying to get answers about what the differences are.
I know the valve covers are different and the Whipple HO SC that fit the 2005 - 2007 won't work on an 08. ButI have no specifics why yet.
I am adding a Whipple HO SC with 8 PSI as soon as they release the 08 model through Steeda.
WOW, I would love to see how they can guarantee 350 WHEEL horsepower with a normally aspirated,automatic tranny GT. I went to their web site, it mentions 350HP and that is probably correct. I wouldgo back and look at my P+S and see if it really says WHEEL HP, not just HP. We all start with a base of 300HP. What gets to the wheels varies car to car but an auto is less than a manny. let's just say tha you have a rare auto that for some reason gets 260WHP which is a very aggressive #. That means that Steeda says they can give you 90 WHP (over 30%) more with a CAI, pulleys, exhaust and an aggessive tune?????????? Please think about how that sounds. For argument sake, can we all agree that the CAI/tune will yield the most results? Let's say a great number is 30WHP increase but let's just say that Steeda is the master of all tuners and gets you 40 WHP... WHERE THE HELL ARE THEY GETTING 50 MORE WHP????
Now if they really mean crank HP...then absolutely they can get you to 350 crank HP with bolt ons. Otherwise, look in the trunk for a cylindrical cannister with NOS written on it because they can't get an auto to 350WHP without some type of power adder. Always remember, caveat emptor
3rd Gear Member
Joined: Jul 2007
Posts: 889
From: Brownstown, Michigan
RE: adding hp
Nope, the purchase order states 350 RWHP and 370 RWTQ.
Between headers, intake manifold, charge motion plates, 90 MM Mass Air, Fuel Injectors, 4.10 gears, CAI, UDP, axle back exhaust.
But we will see once I get it to the Steeda Stampede and my own Dyno shop. I am only telling you what I have in writing and been told.
I am anxious to prove or disprove it too!
Keep in mind that they said the 2005 - 2007 engine and the Q package from Steeda would only get 335 RWHP. There is something different about the 2008. I do not know what those differences are yet. I am trying to find out specifically what is different.
Between headers, intake manifold, charge motion plates, 90 MM Mass Air, Fuel Injectors, 4.10 gears, CAI, UDP, axle back exhaust.
But we will see once I get it to the Steeda Stampede and my own Dyno shop. I am only telling you what I have in writing and been told.
I am anxious to prove or disprove it too!
Keep in mind that they said the 2005 - 2007 engine and the Q package from Steeda would only get 335 RWHP. There is something different about the 2008. I do not know what those differences are yet. I am trying to find out specifically what is different.
3rd Gear Member
Joined: Jul 2007
Posts: 889
From: Brownstown, Michigan
RE: adding hp
OK, I am no gear head so I am learning.
I will speak with the Ford Engineer who worked on the Steeda and find out. He is also one of the 2007 GT 500 Engineers at works on the vehicle program at the Flat Rock plant where the Mustang is built. So maybe he can shed soem more light on this.
How can better exhaust and quicker gears not effect HP? Just like adding intake volume and fuel via injectors. If you increase aspiration and fuel consumption and also not restrict the exhaust then wouldn't HP increase? ( I don't know, I am just thinking out loud!).
The other thing they said at Steeda is that a 2007 with the same build as mine (Auto Convertible)but with 15 RWHP lower than mine (again they say that the 2008 engine produces 15 HP more than the 2007, I do not know why yet) did a 1/4 mile in 12.7 and the Auto Coupe did it in 12.4. The Manual Coupe did it in 12.3.
Do those times sound like they are correct for the HP and torque they say the cars have? You guys probably know better than I do.
So I do not know how that would compare to cars with 350 HP at the crank vs. 350 RWHP. I understand that tires, suspension, weather and track conditions play a part in all that too. Plus the driver.
It will be interesting when I go and see for myself. I have never been to a track or dyno shop before so it will all be new to me.
Actually looking at other sites it states the gear does not change the HP at all. The peak is the peak. The curve may be different and you may get to the peak faster with higher gears but the peak is the same for a given engine.
I will speak with the Ford Engineer who worked on the Steeda and find out. He is also one of the 2007 GT 500 Engineers at works on the vehicle program at the Flat Rock plant where the Mustang is built. So maybe he can shed soem more light on this.
How can better exhaust and quicker gears not effect HP? Just like adding intake volume and fuel via injectors. If you increase aspiration and fuel consumption and also not restrict the exhaust then wouldn't HP increase? ( I don't know, I am just thinking out loud!).
The other thing they said at Steeda is that a 2007 with the same build as mine (Auto Convertible)but with 15 RWHP lower than mine (again they say that the 2008 engine produces 15 HP more than the 2007, I do not know why yet) did a 1/4 mile in 12.7 and the Auto Coupe did it in 12.4. The Manual Coupe did it in 12.3.
Do those times sound like they are correct for the HP and torque they say the cars have? You guys probably know better than I do.
So I do not know how that would compare to cars with 350 HP at the crank vs. 350 RWHP. I understand that tires, suspension, weather and track conditions play a part in all that too. Plus the driver.
It will be interesting when I go and see for myself. I have never been to a track or dyno shop before so it will all be new to me.
Actually looking at other sites it states the gear does not change the HP at all. The peak is the peak. The curve may be different and you may get to the peak faster with higher gears but the peak is the same for a given engine.
s197 Junkie
Joined: Sep 2006
Posts: 16,088
From: IN
RE: adding hp
ORIGINAL: 08Steeda
OK, I am no gear head so I am learning.
I will speak with the Ford Engineer who worked on the Steeda and find out. He is also one of the 2007 GT 500 Engineers at works on the vehicle program at the Flat Rock plant where the Mustang is built. So maybe he can shed soem more light on this.
How can better exhaust and quicker gears not effect HP? Just like adding intake volume and fuel via injectors. If you increase aspiration and fuel consumption and also not restrict the exhaust then wouldn't HP increase? ( I don't know, I am just thinking out loud!).
The other thing they said at Steeda is that a 2007 with the same build as mine (Auto Convertible)but with 15 RWHP lower than mine (again they say that the 2008 engine produces 15 HP more than the 2007, I do not know why yet) did a 1/4 mile in 12.7 and the Auto Coupe did it in 12.4. The Manual Coupe did it in 12.3.
Do those times sound like they are correct for the HP and torque they say the cars have? You guys probably know better than I do.
So I do not know how that would compare to cars with 350 HP at the crank vs. 350 RWHP. I understand that tires, suspension, weather and track conditions play a part in all that too. Plus the driver.
It will be interesting when I go and see for myself. I have never been to a track or dyno shop before so it will all be new to me.
Actually looking at other sites it states the gear does not change the HP at all. The peak is the peak. The curve may be different and you may get to the peak faster with higher gears but the peak is the same for a given engine.
OK, I am no gear head so I am learning.
I will speak with the Ford Engineer who worked on the Steeda and find out. He is also one of the 2007 GT 500 Engineers at works on the vehicle program at the Flat Rock plant where the Mustang is built. So maybe he can shed soem more light on this.
How can better exhaust and quicker gears not effect HP? Just like adding intake volume and fuel via injectors. If you increase aspiration and fuel consumption and also not restrict the exhaust then wouldn't HP increase? ( I don't know, I am just thinking out loud!).
The other thing they said at Steeda is that a 2007 with the same build as mine (Auto Convertible)but with 15 RWHP lower than mine (again they say that the 2008 engine produces 15 HP more than the 2007, I do not know why yet) did a 1/4 mile in 12.7 and the Auto Coupe did it in 12.4. The Manual Coupe did it in 12.3.
Do those times sound like they are correct for the HP and torque they say the cars have? You guys probably know better than I do.
So I do not know how that would compare to cars with 350 HP at the crank vs. 350 RWHP. I understand that tires, suspension, weather and track conditions play a part in all that too. Plus the driver.
It will be interesting when I go and see for myself. I have never been to a track or dyno shop before so it will all be new to me.
Actually looking at other sites it states the gear does not change the HP at all. The peak is the peak. The curve may be different and you may get to the peak faster with higher gears but the peak is the same for a given engine.
As for the injectors, a GT already has injectors and the stock ones are good for 400+ HP so you will not gain anything from the switch IMO.
The stock mufflers themselves arent very restrictive and it has been noted many times that switching them out for a set of Stingers or SLPs doesnt gain anything.
No going to LTs and a o/r x pipe will for sure get you some good peak gains.
Like has been stated testing the car on the 2 different dynos should show some good information. The track times have to many added factors like you stated, and also I am sure they used a great driver for them.
Actually with 350 wheel HP and a good driving i think 11s is possible....