Gutted cat/ test pipe

V

VinPecora

Guest
Which is better to do, any differences. Can I do either on a stock turbo car, with a freeflowing exhaust, or will it overboost??
 
A little difference not a whole lot, let it flow freely as possible, faster turbo spool up and will noticed a slight boost increase, so you will need an adjustable wastegate and fuel pressure regulator to compensate.
 
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