Have a new IP coupe coming in april and trying to figure out what exhaust to get. All the research on hear seems to lead to the conclusion that the stillen cat back exhaust is really loud.

My dad has a FX35 and put sillen intake, z-tube and recently the Stillen cat back exhaust. It is not loud at all. It has a really nice low growl at idle and when you step on in, but can't here it at all at cruise.

Isn't the FX35 engine and coupe engine exactly the same (or almost). There seems to be allot of complaints about the noise and sometimes the drone on the highway in the coupe.

If anyone else has heard (or owns) the stillen cat back exhaust and heard the FX, how does it compare? I can't figure why more people aren't buying the stillen (most HP gain).

 

According to stillen the exhuast is exactly the same (slightly different bends, etc)
fx35 to G35.

I just put a stillen on yesterday, it is louder than stock, as you'd expect. But compared to many I have heard I would not call it loud.