We have played with a few of them, we installed one on a customers truck last Friday and he is very pleased with it so far he is getting about 4-5 MPG better. We have them in-stock and ready ship if your interested!
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.