Is the "grey wire" trick still available on 2012 WR450?

My buddy just got a 2012 WR450. I searched, but can't seem to find if this trick is still do-able on a 2012 WR with FI.

Is the "grey wire" trick still available on 2012 WR450?

Thanks for any info guys (and girls!).

:ride:

don't think so as its all done in the ecu, which you need to change to the competition one (along with GYTR tuner) to unleash the power

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