jstev4610

Friday I got the kooks headers with catted y pipe on my 2015 with a tvs1900, running the magnuson tune. No codes, I was surprised. I know the tune doesn’t have the bank 2 sensors turned off, I pulled it in hptuners and double checked.

Mine will not. The only option they offered was re flash with an optional tire size that gm already has a program with it hard coded. I asked about making the singular change using my hp tuners software and got the you don't want to invalidate your warranty comment.