Reviewed By Tim S (Barney, GA) Reviewed for a 2012 GMC Sierra —10/23/2015 11:00 AM
Transmission acts like it's supposed to and motor is much smoother, worth every dime
Reviewed By angie s (EL PASO, TX) Reviewed for a 2012 GMC Sierra —5/3/2013 4:32 PM
Great product, easy to setup and straightforward. It does have an OBD-II port, and is a little thick but software updates and simple and tech support is helpful. The difference between level 2 to level 4 is obvious and having a k&n 77 series as well as Magnaflow exhaust helps, I notice the low level RPMs are much smoother, especially when that extra passing power is needed.