I'm about to buy a tuner for my 2003 E-350 V-10.I carry a lot of weight and am looking forward to some extra power. I'm looking at the Diablo Predator and the Superchips Max Microtuner. They're both about the same price and the features seam very similar to me. If anyone has any suggestions or opinions of either product I would greatly appreciate it. Thanks in advance and excuse me as I just realized there is a forum specifically for this subject.

 

You will find that most on this site will recommend the SCT tuners. I recently purchased the Xcal 2 from Mike @ 5 star tuning. He posts regularily on this site. I love the results of my tuner, better throttle response, incredible midrange, definately better MPG but have not done the exact math yet. I highly recommend the SCT products, do your research. Mike @ 5 star tuning is worth his weight in gold, what a pleasure to do business with. Check him out here: http://www.5startuning.com/

Kurt

 

I used the act in my '03 F350. It's easy to use and easy to return to stock if you need warranty work. You can edit the settings and it's also easy to do.