So far the numbers look good for the MPG side of it and the power gain is way better for WOT. I have two tanks of fuel through it now and just filled up yesterday for this week. This will give three tanks without the 200-4r over-drive since that is going in starting the 19th of December. I have a you tube channel showing up while we do this to document the whole thing. I have a pile of parts and will take pics of EVERY part number and what it is for maybe this week sometime.