Bests & Worsts Reviews from Amazon

Sorry to say, but this unit does not live up to its promise. I had high hopes that it would help my very well maintained 2011 Ford Explorer XLT SUV with 3.5 Liter, 6 cylinder engine. I was getting ~22 to 24 MPG before I installed the fuel saver unit. I drove with it installed for several weeks, but saw NO improvements and it actually went down driving the same routes. So it does NOT live up to the expectations and I plan to return the unit for a refund. So my recommendation is DON'T buy it, DON'T spend the money - NOT worth it!