If you mean cat back exhaust, no.
I think shorty headers would be ok.
The stock ECU will accept this.
Another poster did the full change, maybe he will chime in here.
2014 Express 3.6/8 speed/3.55 gears...Work Truck
2012 Equinox 2.4...Wife's Ride
"Life's hard, it harder if your stupid." How would you know?
Last edited by oldhp; 11-21-2012 at 12:26 PM.