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Latest Customer Reviews
Hypertech Max Energy Programmer Reviews
2004 gmc yukon xl denali 2500
Reviewed By Shane F (Altoona, PA) Reviewed for a
2004GMC Yukon XL—5/30/2015 5:13 AM
This programmer functioned as intended. It boosted horsepower about 10% which raised my average mpg by 21%. Three extra mpg may not seem like much, but when you're averaging 14 it really helps overall.
Reviewed By Jimmy H (Little Rock, AR) Reviewed for a
2012GMC Yukon XL—11/8/2012 11:00 AM
AFTER INSTALING THE PROGRAM IT HAS RAISED MY FUEL MILAGE UP TO 17-18 IN TOWN AND IT DOES NOT SOUND LIKE YOU ARE DRAG RACEING SOMEONE WHEN YOU TRY TO ACCELARATE IT ONLY SHIFTS DOWN ONE GEAR INSTEAD OF THREE AND TACKING OUT.