Pros: -MPG Booster tune did yield a 0.5 MPG increase in my otherwise stock Ram 1500 Hemi. That is mixed city/hwy. -91 octane tune did result in a slight but noticeable increase in power and acceleration. -Fast shipping Cons: -Cheap hardware. Resistive touch screen. Very slow to save backup and install first tune (I sat for about 2 hours in a hot car for this). I expected better hardware for $400. - 91 octane tune decreased my MPG by about 0.3 MPG in mixed driving.
It does the job just okay
Installed the 91 octane tune on my 2014 Ram 1500 and yes I did feel a difference but not a 600 dollar difference. I plan on getting a custom tune from Hemifever tuning to make the thing worth its money. Its cool that you can take off the speed limiter and adjust a lot of things to you needs. I would recommend buying this through Hemifever.com with their tune already preloaded on it instead of just using the diablo pre-set tunes.