Reviewed By Jeff C (Olathe, KS) Reviewed for a 2003 Chevy Avalanche —12/31/2016 7:16 AM
Throttle response is much better, shifts the way it should and now my speedometer matches my tire size.
Reviewed By Eric I (Spokane, WA) Reviewed for a 2006 Chevy Avalanche —7/13/2016 7:37 AM
After receiving the tuner, I updated through "ignition". Plugged in to my port, and could only get 12% download from stock settings. Called Superchips, got 5 more updates, had to unplug 2 radio fuses,and worked great. 3 to 4 mpg better on economy setting without losing power. Am going to try towing mode, and hope for good results as well. Good product, very good customer support!
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