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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 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 2015 yfz 450 2004 yfz 450 2005 yfz 450r yfz450 yfz450 help yfz450 problems yfz450 tuning yfz450r yfz450r se
  1. YFZ450 & YFZ450R General Talk
    i want to tune my yfz450 2012 to make it faster right now it is stock any recommendations on what should i start doing to make it faster i was thinking of a power comander but only the plug and play i dont want to be plugging in my computer everytime lmao, im new to this and i really want to...
    help please racing atv tuning yfz450 yfz450 tuning
  2. New Member Intros
    Hi all I just purchase my first yfz 450 about two weeks ago the previous owner removed the front lights because it "drained the battery" and he left the rear light connected for some reason something keeps draining my battery and I'm not sure what it is I bought a brand new battery about 3 days...
    battery issue electric issue help please new owner
  3. Maintenance
    My Yamaha won’t start. Check engine light is flashing, some sort of code. I need help to find out what it means. It is also pouring gas out of the air intake boot don’t know what to do. Please help. It’s a 2015
    help help please
  4. YFZ450 & YFZ450R General Talk
    Does anybody have a PDF of '14+ service manual ? Just picked up a brand new machine and need to start stripping her down to the frame
    help please
  5. YFZ450 & YFZ450R General Talk
    My 2022 yfz450r is an amazing quad but it has this bad bog when I try to launch it. I’ve read some things on here about it but they were all for carbureted ones as to where mine is fuel injected. If there’s a simple fix please let me know I’m tired of trying to launch it and it bogging!
    bogging help please
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