Been a while since I read all the TAG threads. Don't recall to much being said about any consistant milage increases if any. One that sticks in my mind is that someone said that they got an increase of 4mpg while towing. I find that hard to believe.
Now that these things have been out for a while does anyone have more experience with TAG 1 of TAG 2 that they want to share??? If I could squeeze 1 mpg out of it that would be great 

