with the modest upgrades i've done ( cai and exhaust ) I just want a modest increase in power and MPG's for towing.
the smarty S 67 just seems too steep a price for a programmer for what I want, Does the Smarty JR work on the 6.7 ?
would I be just as happy with a Hyper Tech Max energy ?

 

I went with the Max Energy for modest but noticeable power increase. My mpg's are up around 3mpg from stock but I think most of that is from unplugging the egr altho I may have gained a bit from the Max.
Overall I'm happy with the Max and the improved towing performance as well as everyday driving.

 

I'm pretty happy with my Hypertech Max Energy. Day in and day out the extra HP is fun and the Mpg is truly about 1+ when I behave. I do like that I just leave it on even when towing the TT (9000 lbs.)

Chris