Yep, you. Definitely makes a difference. Besides the point, your exhaust sounds perfect!

 

Thanks man... And yeah I agree that catless does not sound good on ss/scs at all...

 

<-- catless, FML

 

lol what made you go catless? Do you like the sound?

 

Dude, the sound is ******* horrendous. It sounds sick at WOT because it's so loud, but at 3800 rpm barely accelerating there is this terrible rasp. It sounds more ricey than a honda.

I went catless because the guy I bought my CIA header from included a catless downpipe

 

lol I definitely feel for you man.. I knew I'd never go catless w/ this car...

 

Trying to decide whether or not to put a cat in it and leave the muffler I have or leave it catless and get a dynomax super turbo

 

Does anyone know the GMPP pipe diameter?

 

If you search you will find out easily, because it has been covered a million times !!

The GMPP catback exhaust piping is 2.25" o.d.

 

Isn't that smaller than the stock pipe for the turbocharged model?

 

Why are you worried about the Turbocharged models exhaust size ?? They don't make a GMPP exhaust for the SS/TC, but to answer your question yes it is. It is also smaller than the stock exhaust piping on the SS/SC for the most part, but it flows a hell of a lot better.