Reviewed By STEVE S (PULASKI, WI) Reviewed for a 2002 Chevy Suburban —6/1/2013 8:05 PM
30% low end improvement and maybe 2mpg increase
Reviewed By Robert W A (FREDERICK, MD) Reviewed for a 2011 Chevy Suburban —1/12/2015 10:07 AM
I purchased this more to disable the fuel management program and recalibrate speedo for larger tires, but decided to do the full tune. I am very pleased with the outcome! The truck doesn't lunge while downshifting (because of AFM), it shifts smooth and confidently, performance is improved, gas mileage stayed about the same as w/ AFM, and it doesn't require 93 octane. Even w/ an exhaust system and cold air intake, the tune went smoothly and never any check engine lights. Very Happy!
Reviewed By Charles C (Milaca, MN) Reviewed for a 2007 Chevy Suburban —5/21/2013 11:42 AM
Bought this to disable the AFM on a 2007 suburban, easy to use even if you are not too technical. Worked great, installed the 87 octane tune and modified to disable DOD (AFM). Also firmed up trans shifts and took the top speed limiter off. If you are lookinjg to disable your AFM this does it easily!