Best investment sofar on my truck. I am now getting 14-15 mpg city, and 19-20 mpg highway on the economy tune. I have tried out the race tune for a day, and it increases horsepower significantly. Also adjusting my truck for my bigger tires is a night and day difference in my shifting points and it is not as luggy. I also purchased the Dash pod mount and it is worth the 50$.
Gives my 3.7 V6 Ford attitude
Tuner # 1842 made truck respond like V-8. "Told" tuner that I had different gears to make up for tire size and worked perfectly. It changed dramatically the shift points and acceleration. Love the perf. tune. I think its the best "canned" tune available. 37hp increase on my 3.7 L