AJKZ71
I'm Awesome
I currently have a 97 Z71 with the 5.7 vortec. 35's straight pipes, stock 3:73 gears (heavy half). I need some help on which programmer i should buy. I want something like the Jet programmer with the different settings like tow, econ, performance, etc. I have heard of the hypertech being a good one but has anyone noticed any changes in performance/gas mileage??