I have an 09 2.2l cobalt. I wanted to know how much of an HP increase would I get from a trifecta tune with a tsudo catback and injen intake? Im stock now, with an air box mod soon to come but I just wanted to know for furture reference.

 

i would also like to know...i currently have an injen cai, and soon will have a LSJ header and dp, with a Megan catback....also need to get the stupid SAI deleted

 

Try the 2.2L section, thats were stuff like this is discussed...