Reviewed By Rob R (ALPINE, WY) Reviewed for a 2011 GMC Sierra —3/8/2017 8:38 PM
This is the second one I've gotten. The first one went on a Dodge Hemi. This one I put on a 2011 GMC with a 5.3 liter engine. It definitely woke it up.
Reviewed By Joseph N (CLINTON, ME) Reviewed for a 2011 GMC Sierra —9/21/2016 8:17 PM
As far as I can tell, it does what it's meant to. I put this on before I put on my Spectre cold air intake to test it and noticed an immediate throttle difference, definitely added some power. And it hasn't messed with my mass air flow sensor. Don't buy this to save gas though, I haven't noticed much of a difference. Wasn't too hard to install either, just make sure you have a socket set and a pair of vice grips at least and you'll be fine.