FUELX PRO+ KTM DUKE/RC 390 (2012-2023)FUELX PRO+ KTM DUKE RC 390 (2012 2023) The all new FuelX Pro + is designed not just to offer you the best refinement and riding experience, but also improves part throttle horsepower and torque upto 25%. FuelX is a state of the art electronic plug in fuel injection optimizer for modern engines. It autotunes the engine to its best operational parameters, constantly monitoring, learning and adapting to the engines condition, wear and tear, riding style,
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