to much back pressure
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Joined: Apr 2002
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From: SUDBURY
to much back pressure
hey guys i got a question for you ? i have the 2.5 inch exhaust coming from the engine and manifolds and from the cat back i got a 3 inch now what i did was put a free flowing muffler on the car and removed the cat and put a mac performance pipe on . now is to much back pressure bad for the 305 tpi because my car runs terrible off the line
thanks
thanks
Supreme Member
Joined: Mar 2001
Posts: 5,144
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From: CC, TX
Car: 1999 Yamaha Banshee
Engine: 379cc twin cyl 2-stroke stroker
Transmission: 6 spd manual
Axle/Gears: 14/41 tooth
you can never have too much backpressure...
no not really. by doing all those things you have created less backpressure which is good.
no not really. by doing all those things you have created less backpressure which is good.
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Joined: Jul 2001
Posts: 1,766
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From: New Palestine, IN (Just East of Indy)
Car: '85 Z28
Engine: 305
Transmission: WC T5, 3.23 posi
Just by doing that, it should perform better off the line. Maybe something came loose (like a vacumn line). After I replaced the hoses on my car, it ran 100 % better.
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Joined: Jan 2001
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by brodyscamaro
you can never have too much backpressure...
no not really. by doing all those things you have created less backpressure which is good.
you can never have too much backpressure...
no not really. by doing all those things you have created less backpressure which is good.
Don't you mean too LITTLE.
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Joined: Apr 2001
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From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Originally posted by Mark A Shields
Don't you mean too LITTLE.
Don't you mean too LITTLE.
Backpressure = restriction.
Restriction = bad.
Even the big UPS trucks you see have 4.3L Chevy V6's with a 4" exhaust. Why? Because it make more TQ, and better VE, which means better MPG.
Supreme Member
Joined: Mar 2001
Posts: 5,144
Likes: 2
From: CC, TX
Car: 1999 Yamaha Banshee
Engine: 379cc twin cyl 2-stroke stroker
Transmission: 6 spd manual
Axle/Gears: 14/41 tooth
Originally posted by brodyscamaro
you can never have too much backpressure...
you can never have too much backpressure...
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