I have no clue why just purley curious if anyone has done it or not. Has anyone, or anyone have a guess on about the power numbers you would expect from having GMPP catback, exhaust manifold, and satge 2 with a good tune. Again, purley curious.

 

use the search button

 

well wouldnt having a different tune then the GMS2 not be purely GMPP?

 

I know it's really nothing that your looking for in terms of the answer, but I have GM Stage 2 on the GM Reflash and the car is much quicker than it was stock. I'd love to have the GMPP Exhaust and GMPP clutch although I've heard their catback exhaust is only 2.25".

 

 

2.25 catback has been proven 10+whp in gains on a dyno by jonel.

 

My bff Rallyracer has the gm stage 2 and gmpp catback. Sounds great and is "fast". I think it kept up with my lnf ss stock. I think the gm stage kits are a great way to stay conservative, safe and under warranty. Also good as you dont have to keep getting retuned when the weather changes. Getting tuned via hpt or trifecta of course will lead to much better results of power though. I think many people are or would be happy with full gmpp parts. Also the trifecta/hpt gm stage 3 tune is available and god I'd take it if I had a lsj as you keep AC

 

got to love that tune! loved it since day one! haven't had any problems with it

 

probably because it reduces the kinks in the stock system and flows better...

2.5 will still put down more power. Just sucks, GMPP does sound fantastic...

 

i agree. the gmpp does sound very nice.

 

Yea, i had one. It had an awesome and unique tone, but as soon as I put a new downpipe on...it got ridiculously loud and horribly raspy

 

my buddy for some reason took one of the resonators off and it sounds like ass now! nothing but a mad weed eater