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Yamaha perf ecu &throttle stop screw on 12 wr450 HOLYCRAP

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I have 12 wr450f with low hours and I just installed the yamaha perf. ecu and short throttle stop screw and all I can say is HOLY CRAP!!!!!! Huge differance in performance, as you give it throttle in second and third gears the front end just wants to point in the air, will get in some dirt tomorrow and really test it out.

Idles great, starts great hot and cold.

This was the best $100.00 I have spent in a long time.....

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