Nissan 370Z Forum - View Single Post

370z_stillen · 12-30-2021, 01:50 AM

Hello guys,

Currently my car is too loud, especially the drone in the inside. Recently changed my exhaust because my flow was too restrictive and I want to minimize loss of whp.

I have a supercharger, emptied cats for flow and a full Greddy evolution dual exhaust. The sound is deep and very little rasp which is good. But from the inside, the drone is too much.

What do you guys suggest:

1. Back to cats
2. Try to add an extra resonator/muffler
3. Change whole exhaust
4. ?

Update: The tuner has mentioned 30 or more whp loss if I go back to cats which is not my preference... so looking for other options. Thinking about adding some resonators in the y pipe which I hope will fit. Will contact a custom exhaust company for that.

12-30-2021, 01:50 AM	#1 (permalink)
370z_stillen Base Member Join Date: Oct 2021 Location: The Netherlands Posts: 26 Drives: 370z 40th SC Rep Power: 4	Exhaust too loud Hello guys, Currently my car is too loud, especially the drone in the inside. Recently changed my exhaust because my flow was too restrictive and I want to minimize loss of whp. I have a supercharger, emptied cats for flow and a full Greddy evolution dual exhaust. The sound is deep and very little rasp which is good. But from the inside, the drone is too much. What do you guys suggest: 1. Back to cats 2. Try to add an extra resonator/muffler 3. Change whole exhaust 4. ? Update: The tuner has mentioned 30 or more whp loss if I go back to cats which is not my preference... so looking for other options. Thinking about adding some resonators in the y pipe which I hope will fit. Will contact a custom exhaust company for that. Last edited by 370z_stillen; 12-30-2021 at 12:59 PM.