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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
    Will I need to do the Ais delete on my 450r after installing a vortex? Or is it not necessary with the vortex since it overrides it I believe?
    450r ais delete vortex
  2. YFZ450 & YFZ450R General Talk
    Any input on why the dasa exhaust is not as good on the EFI yfz? And why the yoshi and barkers is the most recommended? Thanks!
    450r barker big 3 dasa rossier
  3. YFZ450 & YFZ450R General Talk
    Any recommendations on who has the best package deal on a Big 3 kit for 2018 yfz450r. Looks like I see a lot of guys going with KBmotorsports. They the best deal around, anyone compete with them? Thanks!
    450r big 3 exhaust fci vortex
  4. YFZ Powertrain
    I recently bought a 2009 YFZ 450R with a acrb conversion. Ever since I got it, I can't seem to get the idle right. I did buy a tach/hourmeter that wraps around the coil, so I could see numbers and not guess at it. I know the service manual says the Idle should be right around 2,000, but when I...
    450r carb carb conversion
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