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#help #suspension #yfz450 2008 2008yfz450 2017 yamaha yfz 450r 450 450r a arms aftermarket airbox ais delete backfiring battery battery issue best coilovers big 3 big bore bog carb carb conversion chain clutch coolant crank cranks wont fire up dasa ecu efi efi tunning electric issue electrical problem engine exhaust fci fci yfz450r fourwerx fuel controller fuel injected fuel programmer full exhaust graphics gytr help help please high compression high idle hmf intake jetting leak maintainance mapping maps msd msd blaster need help nerf bars new owner no spark no start oem oil parts parts review pros & cons pros and cons quad racing atv rebuild rev speed rossier sand dunes shocks sprocket stalling starting starting problem stroker stroker kit throttle transmission trinity tune tune yfz450r tuning vortex vortex ecu wiring wont start yfz yfz 450 2004 yfz 450 2005 yfz 450r yfz450 yfz450 help yfz450 problems yfz450 tuning yfz450r yfz450r se
  1. YFZR-X Powertrain
    hello i have a 2022 yfz450r that has ais delete, full dasa 99db exhuast, fci intake, msd blaster efi and just ordered 38 motosports breather box im trying to get my yfz to stop back firing on decel and when i press the gas really fast on idle it bog anyone have similiar mods with a good map for...
    backfiring bog maps msd blaster yfz450r se
  2. Maintenance
    Bought a brand new MSD Blaster Fi #4247 for 2013 Yfz450r. Installed and started up quad immediately got an engine code 39. Code 39.-Injector (open circuit) Symptom-Injector: open or short circuit Probable Cause Open/short circuit in wire harness defective injector malfunction in injector...
    code 39 msd blaster
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