I've had the Hypertech Max Energy programmer on my wish list for a while. The main reason I want it is to improve gas mileage. I've recently been doing more research, reading lots of product reviews. I have read LOTS of reviews where people say they saw absolutely no MPG increase. Most of the reviews did state that they noticed performance improvements, but I'm not too concerned with that. My truck has NO problem getting moving. It really got me thinking if it would be worth the $380. I already have a K&N intake and Magnaflow exhaust. I have been driving no faster than 60 mph on my commute back and forth to work, driving about 50 miles/day round trip. I also keep my tires at about 40 psi. Doing this, I've been averaging 18-18.5 MPG. That's mostly highway with some city driving (about 70/30, highway/city). Do yall think I could really expect to get more than that with the Hypertech? Sorry for the long post. I just thought I would speak my mind and get some input from you guys. I may end up taking the programmer off my wish list and spend that money on other stuff I want. Let me know what yall think!