yea my RCD tunes had good power but I received a nice little shift flare from running them. the pedal was weird also. it had very little power and then it just came on. It would sometimes turbo surge when I was at heavy pedal shifting into overdrive. I did race my brothers cummins with their street tune and beat him. He has a tuner too. I just had it on the street tune not even the race tune. Good power but very different from my SRL and innovative tunes.
03 6.0 Full EGR delete, S&B CAI, 4in turbo back, 70hp injectors, Moded Banjos, fuel spring mod, GearHeads, RCD, IDP and TSD tuned, trans temp, boost, egt, fuel press, MIA
08 6.4 4in dp. 5in TBE. S&B, Studs, EGR delete, No limit elbow/CAC pipe, Spartan, TSD, QTP and IDP LW tuned
07 5.9 5in TBE, Goerend, Fass, EFI Anarchy Diesel Tuning