I just got a 2007 cobalt ss. Need to know what route to take on aftermarket exhaust for stock motor

 

I recommend ZZP's 2.5 in catback with the resonator.

 

Thanks man I'll check it out

 

What about HKS

 

go with zzp. by far the best out there right now for an ss/sc. the two best exhausts that are almost impossible to get are the corsa and the GMPP exhaust. its like trying to find a needle in a hay stack lol. also go to youtube and research what exhausts sounds the best to you.

 

I just got rid of my GMPP exhaust in favor of a ZZP 2.5" system. WAY better sound to it.

 

Side exit is king