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Exhaust sizing?

Old Jul 26, 2002 | 01:39 PM
  #1  
DuffMan's Avatar
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From: Temecula, CA
Car: '99 Cobra
Engine: 4.6 DOHC 32V
Transmission: T-45
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Exhaust sizing?

At what point, should you move up to 4" exhaust piping?I heard anything above about 325 hp you should, but I wasnt sure.

Thanks!
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Old Jul 26, 2002 | 05:18 PM
  #2  
brodyscamaro's Avatar
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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
http://www.prestage.com/db/default.a...ps_ExhaustSize
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