Reviewed By Kevin E (SAINT MARTINVILLE, LA) Reviewed for a 2015 GMC Sierra —7/21/2015 10:19 PM
Good kit. Easy install. Unsure of any HP or MPG gains. But overall good kit. May be a little overpriced for simplicity of kit components.
Reviewed By Rich L (COLLIERVILLE, TN) Reviewed for a 2004 GMC Yukon —7/12/2015 4:29 AM
My vehicle is over 10 yrs. old and the pick up and performance is a significant improvement. Tech guy at dealership says it takes the onboard computer a little while to learn the new changes and should improve performance. Haven't had a chance to compare gas mileage yet.
Reviewed By Jimmy F (Bowie, TX) Reviewed for a 2005 GMC Sierra —3/19/2015 3:54 AM
installation took half hour.no whistle sound that others have reported.160000 miles on 5.3 motor.sounds great,more power and getting an extra 1 to 1 and half mph gain.great purchase,well worth the money