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  1. YFZ450 & YFZ450R General Talk
    So I just got my Vortex ECU in the mail and installed it on my 2023 YFZ450r just fine. However, the issue came when I went to start the bike. When trying to start the bike cold with the Vortex ECU installed, it just cranks and cranks and eventually starts for a second but then stalls. I’ve tried...
    vortex ecu yfz450 yfz450 help yfz450 problems yfz450 tuning
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