So my friend has a camaro and he was telling me about HP tuners and how he tuned his transmission and engine and timing with this tuner. I was wondering if anyone in here has used this tuner before and if they liked it. Do you have any pointers for me about this program? I also work at a GM dealership and i know that you can check for DTC's with this program also. Is it really worth the 600 + dollars for this? Also will this work on my 2005 pontiac grand prix. it is not the supercharged nor the v8 version
thanks guys