Reviewed By stephen r (WEST COLUMBIA, SC) Reviewed for a 2006 Pontiac GTO —3/6/2013 4:19 AM
I can notice a boost of around 2 mpg, but still have to go get a dyno to see the hp results. Over all good product, worth the money.
Reviewed By Hal C (COLLINSVILLE, OK) Reviewed for a 2014 GMC Sierra —11/17/2017 4:03 PM
Not enough time to prove mileage gains but no question the improved sound when I step on the gas. The installation was clear and easy to perform. Response does have an improved feel and definitely no buyers remorse.