Page 1 of 1

Making 75 db

Posted: Tue Jul 11, 2017 11:12 am
by John McFarland
Ok, so I'm coming up next weekend for race 4. I see sound is 75 db. How hard is that to make? I have no idea where my car reads. It has never been a problem at Mid Ohio or Pitt, but they have a higher allowance.

My current setup has a Magnaflow round muffler after the header and the exhaust runs out the back straight out. What are others out there doing on their setups that keeps the noise down to limits? I have this weekend to get all my final prep so if I need additional sound deadening I can get that done too.

Re: Making 75 db

Posted: Tue Jul 11, 2017 2:56 pm
by Brian
It seems like the generic solution for a car that is marginal on sound here is a 90 degree angled exhaust tip, pointed Down and Right (135* compass- as viewed from the rear).