power gains question
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Joined: Jun 2008
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From: Jersey City New Jersey
power gains question
I know that there is not a major power increase by upgrading exhaust but what can I expect to see with the flowmaster american thunder kit? What muffler system can I expect to see the biggest gains from?
Thread Starter
Advanced
Joined: Jun 2008
Posts: 72
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From: Jersey City New Jersey
has anyone dynoed any of the exhausts on the market to see if there is any real gain. I just want to know if I am only getting a better sound or a little bump in power also.
_Sloth Whisperer_
Joined: Jul 2008
Posts: 3,369
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From: Malaysia Air Flight 370
Depends on previously fitted upgrades as well. If the car is stock, you'll get an increase that is maybe a slight more than the repeatable margin of error for your average dyno.
If however, you're like me and have a large cam, vararam, headers, x-pipe, etc. that you are still choking through the stock mufflers, switching out the cans may yield as much as, in my estimate, 10-15 hp.
If however, you're like me and have a large cam, vararam, headers, x-pipe, etc. that you are still choking through the stock mufflers, switching out the cans may yield as much as, in my estimate, 10-15 hp.
Melting Slicks
Joined: Oct 2005
Posts: 2,515
Likes: 3
From: Goleta California
Most manufactureres will claim around 5 rwhp. Good luck trying to measure that. Aftermarket exhaust should only be purchased for sound. Personally I wouldn't waste my money on them, I would get a set of headers instead.
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
The following are dyno readings between 07 z06 mufflers open and the stock cans. When tuned for the stock cans. If it would have been tuned for them
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
Last edited by 3 Z06ZR1; Sep 16, 2008 at 08:27 PM.
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Melting Slicks
Joined: Oct 2005
Posts: 2,515
Likes: 3
From: Goleta California
[QUOTE=Rock'n Blue 08;1567131207]The following are dyno readings between 07 z06 mufflers open and the stock cans. When tuned for the stock cans. If it would have been tuned for them
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
So that pretty much backs up the claims that the NPP type exhaust is worth 6hp?
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
So that pretty much backs up the claims that the NPP type exhaust is worth 6hp?
Burning Brakes
Joined: Jan 2008
Posts: 905
Likes: 0
From: BURTON MI
muffler gain
[QUOTE=achilds;1567131963]
With stock header 5-6 will probably be it. More for sound than power. Headers will put out approx. 25 hp at which time the exaust will give 0-5. Most of the restriction is in the headers.
The following are dyno readings between 07 z06 mufflers open and the stock cans. When tuned for the stock cans. If it would have been tuned for them
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
So that pretty much backs up the claims that the NPP type exhaust is worth 6hp?
It should have gained a few more peak. but a nice increase though the power band.Car was 08 ls-3 with headers
So that pretty much backs up the claims that the NPP type exhaust is worth 6hp?
Last edited by BOB EAGAN; Sep 16, 2008 at 10:31 PM.