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Looking for more power and improved performance? XPR recommends Vortex ECU’s for fuel and ignition control to improve starting, power and ultimately faster lap times. You can simply plug in the ECU and switch between 10 different fuel and ignition timing maps.  Another option is programming your ECU with custom mapping that we develop. We do this in house on our state of the art dyno, with parameters which improve starting, rev limits, fuel timing, throttle enrichment, and much more!