Well I desided to go with the RS*S EXMag GT2 universal exhaust, but I have one question. They have the choice of eiather 60mm or 80mm muffler. I would like to get the bigger one, but I noticed with some other exhausts that i was looking up it said the the 80mm is better for Turbo charged cars. It doesnt say here, but i was just woundering if it’s still good for a non-turbo car? I know this might be a stupid qustion, but I dont know a whole lot about cars, so i thought i’d ask before i go ahead and buy it. thanks for any help
60mm is 2.36 inches and 80mm is 3.14 inches, i would go with the 60mm probably
I’m buying that exact system, and I will probably go with…well, I don’t know. Right now I have a 4" muffler! Anything would seem small, I’ll have to measure it though. 
Turbo-specific (80mm) would mean it allows more air flow, but since your not turbo, you might want to get the 60mm for more torque. too much airflow and you will probably lose power.
(Am I wrong???) :hmm:
Yeah a 4" tip probably, but I doubt the piping is 4". The Ex-Mag (original) has something like a 4" tip also but 2.25" piping.
if ur running n/a, 2.25 is gud enuff.
I’m planning on running 2.5" with a BOMZ MUFFLER with 4" output. Will i loose power with this setup anyone know?
