I'm looking at either building my own custom exhaust from the cat back (for now) or getting the gmmg chambered exhaust. If I was to build it custom it would be with the slp loudmouth shotgun resonator. Which one sounds better any audio clips? And which one drones the least? And I've heard people say that these are too loud and have to yell to the person text to you at highway speeds. Which one is louder? And the other thing is the only place I can find the gmmg exhaust is on hawks and it's $750 anyone know where it's cheaper? Why is a cat back so expensive anyway?

 

I have a Phab catback on my car. It is pretty loud.
https://www.thirdgen.org/forums/exha...outh-copy.html

 

Personally, I find that unless you really have a fairly high compression motor with a lumpy cam, the GMMG doesn't really sound that great. ...and it is fairly loud too.

I've NEVER heard a SLP LM that I liked. I had one. Terrible. And loud. Way too loud in my opinion.

My fave is the Hooker Aerochamber, but I've also heard a lot of Spintech and Magnaflow's that I like. They're all a bit louder than stock, but not obnoxious.

 

Man the hooker sounds amazing. Love it on cat-deleted LT1s

 

My fave is probably Borla but I like the sound of my 3in Flowmaster system pretty good also.