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  1. Engine hesitation need some help

    Fuel Injection Tuning
    Hello guys, I need some help here. My bike is raptor 700 2015 with Big 3 mods, PCV with timing and Autotune. My bike it start running weird with some hesitation. I attached some photos of my spark plug, I think it looks fine. Its the factory plug and it have about 100hours of use. I tried many...
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