I have a stock cobalt 06 ss?sc 2.0 I want more power all I have Is a cold air intake and a catback exhauast im thinking about putting a stage 2 kit tht gm makes but I think I might go with a stage 3 kit if I go with the stage 3 kit do I have to do anything else to the motor or can I just go stock to stage 3 with no problems

 

Go to zzp and get a stage 3 ur good more cooling mods the better

Search. Theres five threads about this everyday

 

someone posted a stage three setup today in the classifieds go look