Ordered the volant for my 2004 tahoe. A tad pricey in my opinion but not auto anythings fault, pretty much priced the same anywhere else I looked. Shipping was free which is great, and fast, ordered on a Monday, received on a Thursday. Installation was pretty easy, I'm not mechanically inclined but I did it in an hour and a half. Could of done it quicker but the installation instructions were a bit sketchy when installing the master. After that no problem. Overall very happy, loOKs great!
Haven't had it on long 3 tanks of gas but I picked up 2.1 mpg and a slight difference in acceleration. Haven't pulled with it yet but I'm optimistic. Easy install 20-30 minutes in my drive. Looks good too. You can hear the air flow difference which I also like. I was leery of the claims but so far it does what that said it would. I would recommend it.