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 chad g (independence, KS) Reviewed for a 2007 Chevy Avalanche —5/6/2016 6:18 AM
Looks great! Easy easy installation! Great instructions. Can't really hear it Though since my truck already has flowmaster exhaust from cat back. Lol. Next step is to replace the headers and cam.. 2007 chev avalanche ltz
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