which power programers seem's to offer the best feature's and best performance? Not looking to race my truck (2003 1500 hd 6.0) just looking for a little more pep and adjust the computer from a tire height change.

 

youll never get a lot of performance from a handheld tuner. but if youre interested, ive got a hypertech power programmerIII for sale CHEAP. you can tune for your new tire size.

 

For the price of a handheld you could get a mail order tune or even a dyno tune, either one yards above the handheld.

 

or you can pick up a diablo. its a handheld with the ability to hold up to 5 custom tunes which you can get by emailing predator or a dealer of theres. so where as with a mail order, you can only have one tune at a time, and if you want to update the tune, it will cost about $10 shipping each time

 

How much? I need to recalibrate for my new wheels on my Yukon..

 

Do a Diablo -it also acts as a code reader/diagnostic tool.Plus files can be downloaded to it be e mail for updates as you want more power-which Will happen !!!