Reviewed By jeffrey w (Hixson, TN) Reviewed for a 2001 GMC Sierra —1/27/2011 5:19 PM
I was able to install this in about an hour. I have a lot more power but no improvement in MPG. Overall, a great product.
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.
Reviewed By Alonso G (KEYES, CA) Reviewed for a 2000 GMC Sierra —3/24/2016 7:54 AM
So first of all let me start by saying this thing does have a whistle noise even though it says its quiet. I do have a aftermarket intake and I'm not sure whether it makes it whistle more because of all the air coming in faster. Also I had to cut some plastic to make it fit because of aftermarket intake. Now for the mpg/hp/tq gains as far as the mpg I'm not too sure on that but I do have better throttle response and my truck gets going better than usual my truck does feel like it has more power.