Reviewed By Jason B (Saranac Lake, NY) Reviewed for a 2014 GMC Sierra —3/7/2017 6:05 AM
Seems to work well. Would of like to have some kind of seal strip on the fender wall but all in all im very happy with it.
Reviewed By Ronald D (Swansboro, NC) Reviewed for a 2014 GMC Sierra —1/28/2017 8:24 AM
The system came in as ordered and all parts were there. Installation took me less than an hour and was really simple. I really haven't noticed any improvement in performance and mpg decreased approximately 1 mpg. It does make quite a bit of noise when you get on it but that I like! With the combination of the K&N and Flowmaster dual cat system, my Serbia sounds like a real monster! I would recommend the K&N 63 series to anyone!