Reviewed By Richard B (Pittsburgh, PA) Reviewed for a 2011 Chevy Avalanche —10/25/2016 8:35 AM
I haven't noticed any signficant change for gas mileage but the sound and horsepower that my truck puts out is awesome and I only have a stock exhaust!
Reviewed By Richard D (LEICESTER, MA) Reviewed for a 2007 Chevy Avalanche —10/14/2016 9:11 PM
Before directions are sent out, you may want to review them beforehand. Numerous issues with small details/images and part numbers used were inaccurate based on overall image of the the assembly.
Reviewed By Christopher L (GRAND RAPIDS, MI) Reviewed for a 2013 Chevy Avalanche —9/7/2015 8:41 PM
Been two weeks. Installation was easy. Looks great. Love the sound, and pretty sure there's a tangible increase in power. Fuel efficiency Is slightly better as well - Hard to quantify currently - been offsetting any gains by getting after it more frequently now. Free cleaning kit was just icing on the cake