Reviewed By Richard B D (Darlington, MD) Reviewed for a 2007 GMC Sierra —10/6/2017 7:53 AM
great performance just what needed in tow and performance set.
Reviewed By Robert P (PRATTVILLE, AL) Reviewed for a 2000 Ford F-150 —9/14/2017 4:06 AM
Easy to use. Speedo calibration is a bit of trial and error since inputting tire size didn't work. Used GPS and adjusted size until speedo was accurate. Engine tune works well and increased performance.