Reviewed By Russell H (MERIDIAN, ID) Reviewed for a 2011 GMC Sierra —8/25/2016 4:08 PM
Easy install. Gave my Sierra a nice throaty grawl to it while punching it. Helped with HP as well.
Reviewed By Matt F (Columbia, MO) Reviewed for a 2014 Toyota Tundra —8/25/2016 9:15 PM
This thing is great. Can't comment on mileage yet, although the computer is saying I am getting lower than I have in a long time unfortunately. As for performance though, you can feel the extra horses kick in, not to mention the engine roars when you step on the gas. Sounds amazing with my flow master 40 muffler and dual exhaust. Highly recommend. The pictures are garbage on the instructions so just find the youtube video, or look at the schematic.