how does anyone like this manifold it seems a lot cheaper than the vibrant one. i like that gm makes it so i wont get questioned by the dealer but has anyone seen decent power gains with it? im planning on getting the gmpp exhaust also.
does gm make a downpipe also?

 

No GM does not make a downpipe, I will let you know I will be installing a ported GM Manifold with ZZP Downpipe tomorrow I'll post up how I like it!

 

the manifold mostly helps with torque. in association with my zzp dp, i see some great torque numbers

 

please do

 

I personally love the GM Manifold and Touring exhaust set up. The best part about it is it's quiet. I can't hear my exhaust over my supercharger.

 

I personally love the GM Manifold and Touring exhaust set up. The best part about it is it's quiet. I can't hear my exhaust over my supercharger.

 

I gettin my honed manifold here in a few days, really excited about how it will turn out. I have the sport GMPP exhaust though.

 

If you get a GMPP manifold and dont replace your dp you will not get any permance gains... This is a very bad rumor that has been floating around for too long.

Please read this thread.

https://www.cobaltss.net/forums//showthread.php?t=67539

 

I would still like to know how he can up with those flow calculations, dont get me wrong, its useful just need to make sure that the info is accurate, I have heard that the GMPP mainfold give around 4-5hp and 6-8 ft lbs of tq