Well, I have to say that so far I am very pleased with my new stage 2 setup. went with the same parts as stage 2 from OTT because they're cheaper than the dealer by 200 bucks. then my father in law and i did the install and used a tune by vince at trifecta. anyone wanting to know if vince can tune or if trifecta is a customer friendly company can be assured with a resounding yes. car pulls HARD now and the blower has never been louder.

 

wasn't aware ottp had a stage2

 

gm stage 2 stuff. 42's, a 3.0 pulley, stage 2 belt.

 

how much hp will you gain at the wheels from the gm stage 2 kit?

 

they say 40 i think.

 

A stock Cobalt goes from 205 to 243 with the Stage 2. Now the 3.0 pulley is slightly smaller and then the only difference would be the Vince tune and the GM tune.