Reviewed By Scott R (SAINT PETERS, MO) Reviewed for a 2003 GMC Sierra —3/17/2016 8:55 AM
This tuner works great and is very fast and easy to change settings on my truck. Feels like a totally different vehicle now.
Reviewed By james S (RIVERVIEW, FL) Reviewed for a 2003 GMC Sierra —9/10/2015 1:49 PM
This is my first foray into Tuning, but with this product, and a little research its point and click. Installation/use was easy, and tunes can be modded as you go. Easy to read, easy to navigate, easy to use (to a certain point, for a novice). And fun. You notice the differences in performance right away.