Nissan 370Z Forum - View Single Post - Quietest non-restrictive midpipe

j-rho · 04-28-2015, 01:28 AM

Hi everybody,
Right now my car has stock headers, Berk HFC, Garageline midpipe (which has a pair of 10" resonators) and the stock muffler. It's fine at idle at light throttle, but at WOT it gets too loud, and goes over 92db, which is my local sound limit.

Going to be putting in PPE LTH, and a pair of very high flow 3" cats just after the flange - which probably won't muffle much. The stock muffler is probably about as quiet as one can get there - so that leaves the midpipe section.

Does anybody have pics of a midpipe where they'd welded in some extra resonators or something? The car is going to get louder with the headers, I'd like to find a way to bring the noise level back down to where it is now, if not make it a bit quieter. While trying to still maximize power. Ok if some weight gets added.

Thanks for any input you can provide!

04-28-2015, 01:28 AM	#1 (permalink)
j-rho Base Member Join Date: Jul 2014 Location: San Diego Posts: 154 Drives: 1967 Camaro Z28 Rep Power: 11	Quietest non-restrictive midpipe Hi everybody, Right now my car has stock headers, Berk HFC, Garageline midpipe (which has a pair of 10" resonators) and the stock muffler. It's fine at idle at light throttle, but at WOT it gets too loud, and goes over 92db, which is my local sound limit. Going to be putting in PPE LTH, and a pair of very high flow 3" cats just after the flange - which probably won't muffle much. The stock muffler is probably about as quiet as one can get there - so that leaves the midpipe section. Does anybody have pics of a midpipe where they'd welded in some extra resonators or something? The car is going to get louder with the headers, I'd like to find a way to bring the noise level back down to where it is now, if not make it a bit quieter. While trying to still maximize power. Ok if some weight gets added. Thanks for any input you can provide!