I'm going to be honest, being you were used to 6.0L I have a Spartan
and I do like it awesome power and fuel mileage, but I still have had this truck for almost a year and I liked my 6.0 Innovative
tuned better than the 6.4l. The 6.4 is a way nicer truck as far as comfort and ride, but I liked being able to adjust what i wanted to with the SCT. I'm not happy with the way the 250 tune shifts, it's way too aggressive, truck jerks way too hard for a part throttle shift, the 210 tune is more linear and doesn't feel as "powerful" compared to throttle postion. I know I'm going to get flamed for speaking against the Spartan
in any way but this is the way I feel, If the 250 tune was more calm on shifting I wouldn't have any gripes, like I said fuel mileage is definetly better, but I've switched from the 2 tunes numerous times and made me wish I had the troublesome 6.0 sometimes. Now the DashDaq is awesome, it has so many features the average person will never use, I do like being able to monitor damn near anything under the sun, and Spartan
has alot of tunes that come with it. My main reason for buying it was to try and keep my factory warranty which they claim should be kept with it. Not out to bash the Spartan
by any means, just being honest.