Reviewed By Paul D (Millington, TN) Reviewed for a 2011 Chevy Tahoe —12/29/2014 8:41 PM
I haven't had it long enough to know if it helped mpg, but it definitely helped throttle response. Plus, it sounds cool when you get on the gas!! Definitely worth the money. Took about an hour to install, I had to drill a 5/8 & 1/4 hole so make sure you have those before you start the job. The instructions stated to only drill a 5/8 hole, but I couldn't get the support bracket to line up, hence the 1/4" hole.