Who owns there own tuning device

[yukonjacks]

Own there own EFI Tuning module,

 

[Anthony]

I havew an SuperChips and happy with it as it can also read "error codes" and reset them to prevent travel to dealership

 

[Cobra]

Hypertech for mine. Made a definite difference IMO. I would like to try a real tune like maybe the Black Bear or Nelson. Just not ready yet. I have a friend who has tuning software and has been messing with his Tahoe. He wants to Tune mine but, I'm not quite sure I trust him.