Parts & Accessories Spare parts DR1 programming services prices . Speed limiter removal 110 . Cut off (misfire or electrical cut) 120 . Rollin (downhill) 110 . Idle adjustment (engine pressure) 90 . Throttle adjustment (increased pedal response) 130 . Backfire (shooting) 170 . Popcorn (popping) 170 . Cooling fan speed adjustment 110 . Cylinder deactivation system removal 110 . Environment system removal oxygen sensors 100 . Best prices for service and quality of work . DR1 (Reliability and Professionalism)