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ais delete

  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?
  2. YFZ450 & YFZ450R General Talk
    I have a 2020 yfz450r and just installed the AIS delete and now my quad is showing check engine light, throwing code 37, and idling at a very high rpm in neutral. I do not have a tuner nor an exhaust. Motor has never been opened. Any ideas on how to fix this?