aldouse Posted February 18, 2007 Posted February 18, 2007 i know that this question has been answer time and time again. but would someone please give me an answer in layman terms. why would running a bigger diameter inlet than oe spec in a muffler not be ideal for NA application vs. turbo? i hear the term not enough backpressure or something along those lines used a lot. but dont understand the science and/or concept involved... what would happen? :tia: -- yay for the sig! -- my garage!
AWDxBOOST Posted February 18, 2007 Posted February 18, 2007 less backpressure is better in a turbo car backpressure will not allow the turbo to spin as easily because it provides resistance that fights against the turbo spinning on an na car some backpressure is needed for the overlap of valves opening in closing there really isnt a simple answer because you have to talk about scavenging ability and other things going on in the car
BigJack Posted February 19, 2007 Posted February 19, 2007 I have aftermarket mufflers with larger diameter and its fine...i had the cat back on with now resonator and lost some bottom end. This summer i may try losing the resonator for a little added noise
vet Posted February 19, 2007 Posted February 19, 2007 Large diameter exhaust pipes allow the velocity of the exhaust gases to slow down. You want to keep the velocity high to help the engine breath better.
aldouse Posted February 19, 2007 Author Posted February 19, 2007 Large diameter exhaust pipes allow the velocity of the exhaust gases to slow down. You want to keep the velocity high to help the engine breath better. ahh... ic ic. thanks. -- yay for the sig! -- my garage!
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