Originally Posted by Arth
From what I've seen the H&S Mini Maxx is the best if you want custom tuning. The RaceME is also a good tuner.. a lot cheaper but can only do the tunes it comes with... no custom tunes.
The older Mini Maxx tuners that can do deletes are very expensive. Honestly you won't see much improvement with any tuner unless you do the deletes.
Unfortunately I have no experience with anyone that is running a tuner on an emissions equipped truck. I can't comment on Edge either.
I am sure others will chime in.
As Arth said, if you want to see any noticeable gains in fuel economy you need to delete. The 4 options you have for delete tuners are H&S MiniMaxx, H&S XRT Pro, RaceME, or SmartyJR. That's listed in order from best to worst which coincides with the price. The MiniMaxx is the most versitile as it offers shift on the fly tuning, the ability to custom tune, transmission tuning (which you will want if you want to keep your transmission in tact) as well as a number of other options and gauge readouts. The XRT Pro is similar as far as features go but it does not offer shift on the fly tuning or gauge readouts. Both the RaceME and the SmartyJR offer engine tuning only.
If you do decide to go for full deletes you will also need either delete pipes or a full turbo back exhaust (I'd recommend Flo Pro). Plus an EGR delete kit is a good idea as well (Sinister Diesel makes the best kit available IMO)
Tuning and deleting is definitely not a cheap thing to do but once you do it you'll never look back. The truck is 10 times more fun to drive, much smoother and more powerful plus it will be way more reliable and last you much longer. Here's a link to my write up about the deletes on my truck if you want to read up on them some more - 2012 6.7 Cummins Tuned and Deleted - H&S MiniMaxx, Flo Pro Exhaust, and Sinister EGR Delete
Originally Posted by Kcbigbadram
H&S mini maxx is the way to go. They're pricey but by all reviews they're the best. It will set you back at least 1300 though.
$1300 would be cheap for a used one. New ones are going for around $1800 now.