Royal Enfield Classic 500 Twin Spark 2011-2017 Powertronic ECU V4Plug and Play Plug & Play Performance ECU Install in under 40 minutes with no fancy tools required increase In Power & Torque By controlling both fuel & ignition to deliver optimal performance & throttle response throughout the rev range Downloadable Maps PowerTRONlC comes with dual pre tuned maps which can also be downloaded Built ln Map Switch Switch between Race & Race by using the on board map switch improved Throttle Response The throttle