Reviewed By Gregory Z (Herndon, VA) Reviewed for a 2008 Chrysler Aspen —5/13/2015 8:30 PM
My Aspen has lots of power and it made it a great riding family car.
Reviewed By Kevan C (Hagerstown, MD) Reviewed for a 2012 GMC Sierra —7/5/2017 2:02 PM
Bought a pre-owned Sierra 1500 with the Vortec 6200 where the previous "computer" calculated MPG was 10.2 average. I cleared the computer, installed the MPG default tune with firm shift. With 2 tanks of regular 87 octane I now get overall "computer" average of 16.7. I will hand calculate at next fill-up.