Exhaust from tip to tail - suggestions?
08-10-2005, 10:31 AM
#16
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Anyone wanting the song and dance and research and debate and......on the 4" vs 3".....
SEARCH
or this thread will head to the loch
And believe me NZ has done his research....
SEARCH
or this thread will head to the loch
And believe me NZ has done his research....
08-10-2005, 11:28 AM
#17
Originally Posted by stewardx
4" exhaust will make more hp on a stock car over a 3". Just like a 3" will make
more hp over a test pipe.
Its all about reducing exhaust pressure after the turbo and bigger is always better there.
more hp over a test pipe.
Its all about reducing exhaust pressure after the turbo and bigger is always better there.
John at Vitesse has observed power loss from toc big of an exhaust on a mostly stock car. Bigger is not always better.
08-10-2005, 01:08 PM
#18
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Originally Posted by jerome951
Even Lindsey will tell you that their 4" exhaust is overkill for a mostly stock motor.
Like NZ said, save the money and get a 3".
Like NZ said, save the money and get a 3".
08-10-2005, 04:18 PM
#19
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I've heard differing opinions about the scavenge factor on turbo-charged powerplants. It seems to be less of a factor, though it still is a factor. If the 4"is not just overkill but may also suck away HP, I'll go with the 3".
What else can I tell you about future mod plans that'll help with the 3" vs. 4" decision?
If I'm going to stay with the factory electronics, valve sizes, and only ever run an amount of boost that will make this a reliable daily driver, will I ever grow out of the 3"?
What else can I tell you about future mod plans that'll help with the 3" vs. 4" decision?
If I'm going to stay with the factory electronics, valve sizes, and only ever run an amount of boost that will make this a reliable daily driver, will I ever grow out of the 3"?
08-10-2005, 04:28 PM
#20
Originally Posted by buzzsaw
If I'm going to stay with the factory electronics, valve sizes, and only ever run an amount of boost that will make this a reliable daily driver, will I ever grow out of the 3"?
No. Guys are running big horsepower and big turbos with 3" exhausts. I'll let them speak up. But I don't think you'll out grow the 3" on a street car.