So what are the differences between the RaceME and the RaceME Pro? The RaceME has 3 power levels. 40hp, 80hp & 120hp. The RaceME Pro is essentially the same tuner but offers higher power levels; 40hp, 80hp, 120hp, 160hp & 200hp. If you don't need the additional power gains then the RaceME is your best option. If your looking to add 200hp to your 2007-2012 Dodge Ram Cummins Diesel 6.7L consider the RaceME Pro tuner.