Reviewed By Fenton L (BRISTOL, PA) Reviewed for a 2012 GMC Sierra —7/23/2015 8:12 PM
Installation took about twenty five minutes. Large inprovemnt on engine response and sound. Seems to have a decent amount of noticeable acceleration improvement
Reviewed By Geary A (Bernalillo, NM) Reviewed for a 2012 GMC Sierra —3/24/2015 12:15 PM
Installed on 2012 gmc sierra 1500 5.3 easy to install looks and sounds great. I got an indress of about 3 miles per gallon on the highway and the extra power is ovious. I am very pleased with the product.