Yamaha YZ250F 2024-2026 ECU with XPR 2nd Injector Maps (please expect 1-2 weeks)

XPR recommends the Vortex ECU with our Custom Maps for fuel and ignition control to improve starting, power and ultimately faster lap times. You can simply plug in the Vortex ECU and switch between 10 different maps. Your Vortex ECU with XPR Custom Maps will improve rev limits, fuel timing, throttle enrichment and much more! Have more questions? Here are some of our frequently asked questions. XPR develops custom maps to improve the performance of your bike. We offer our custom maps that we have developed with trusted industry test riders like Kris Keefer and top-level pros, to bring you a more connected throttle to rear wheel feel, broad linear power, less engine braking and customizable power delivery. Click here. How do I switch maps on my Vortex ECU? The dial marked "X10" is your map selection. Each ECU comes pre-selected on map 1, which is our best overall power map. Do you have a manual for this? Visit our Vortex ECU manual page here! For all other ECU support, visit our ECU supp