NCRG12, on my 2012 RGC , I did the S&S MR103 cam, S&S adjustable push rods , V&H power duals , V&H twin slash slip-ons , V&H Drak A/C , & FP3 , after about six months trying to autotune using the FP3, and numerous calls to Vance and Hines customer service ( which was great by the way ) , I just could not get it tuned properly. I read about docs performance tuning in Minneola Florida ( north of Orlando ) . He is one of the top tuners in the country. He would only use the TTS. So after fixing my O2 sensors, installing the TTS, and a full Dyno , it ran amazing ( 100 HP & 110 TQ ) ! The best thousand $1000 Iíve ever spent on the Shark . I am not sure if he is a dealer for TTS, or if he uses it because it is the best. Give him a call . would be more than happy to point you in the right direction. Also , you should ask your local tuner , which unit he recommends .