Has anyone used the gm performance exhaust and if so does it sound pretty nice because im really thinking of going to 3 inch piping and an aftermarket muffler, what do you guys think?

Also has anyone used the gm extrude honed exhaust manifold if so how much of a difference in sound and performance did it have?

Thanks guys!

 

https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/official-exhaust-thread-10668/

https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/06-ss-sc-dyno-numbers-9926/

 

I got the gm performance catback and I love it

 

Any LSJ that is more than 40% stock will never need a 3" exhaust.

 

3 inch exhaust is no good for our application. We benefit with a smaller exhaust.

 

is that really true? i can't understand why GM would make a smaller 2.25 exhaust than stock 2.5.

 

my gmpp sport sounds awesome and there is an increase in performance, she screams with stage 2 at wot. Im very happy with this setup.

 

great to hear, I have been thinking about getting the GMPP performance exhaust but I will wait to see whats confirmed for stage 3. Supposedly header and exhaust are included in it.......

 

u sir are absolutly right

 

Absolutely right hah? What did you hear about? Stage 3? Cominig with header and exhaust? Do tell....

 

im just talkin abut my gmpp exhaust, wat the are you talkin about??

 

Stage 3 where did you get this information ??

 

what are you smokin, i said stage 2??

 

ohhh i see now, i didtn say it soem one else did, lol well i hanvt heard sqat about a stage 3, i did hear something about GM releasing a smaller pulley in the future

 

I also read somewhere on here that Stage 3 will be header/exhaust.

 

or you can make yer own stage 3 and buy the parts seperatly, so when i get the exhaust manifold that means i have stage 3 braggin rights lol

 

Well no one knows details. There could be more, hell maybe another reflash. Or maybe absolutely nothing. I personally think its just a rumor that everyone wants to believe in. Although I do think GM might do a stage 3 eventually.

 

all this makes me wish i had exhaust oh and that whole stage 2 thing and money haha.