Changed to the F6. When I don't like something, I don't have to send the chip back. He sends me a tune, I install itI def recomend the DP tuner
Jody is great to deal with.
I have had my F5 for over 4 years and had him reburn it for me when I had Swamps injectors installed!
I may buy a newer F6 and sell/trade in my F5(special tuning for single shots)
(60 Tow, 80 Econo, 120 Race)
Look for the tunes that others have picked as well: buy the Drive-thru tune! I needd to get that, otherwise I have to turn off my truck