Anyone installed a preformance chip?

[johnnyringo]

I recently bought a 05 Envoy Denali and I'm considering purchasing an aftermarket computer chip. I've heard rumors of increases in MPG and performance. Anyone here tried this? Thanks, JR

 

[Molson02536]

I recently bought a 05 Envoy Denali and I'm considering purchasing an aftermarket computer chip. I've heard rumors of increases in MPG and performance. Anyone here tried this? Thanks, JR

They don't work, if your going to have any performance tuning done. Your going to have to find a speed shop in your area and have them re-tune your Envoy's ECM.

Good luck and keep us posted, feel free to join us on Cars Connected...
Molson02536