Reviewed By Daniel M (Moreno Valley, CA) Reviewed for a 2014 GMC Sierra —8/21/2017 8:27 PM
Not bad at all. K&N are the Manufacturer so can't complain.
Reviewed By Robert O (Apple Valley, CA) Reviewed for a 2014 GMC Sierra —6/22/2017 11:31 AM
Jet products has never let me down until now... Wanted to install their tune into my 14 Sierra All Terrain, but seeing they haven't built it yet, bummer!!!! But I did install this TBI and the mass air sensor, and it took a couple days to get the computer squared away... It have not only seen an increase in power from around the 3200+ rpms, but an increase in mileage around 2 mpg local, and close to 3 mpg's on the big road... Now that's running around 1800 rpm's @ 80mph...