From 500ft elev to 6000ft elev jetting?

2 replies to this topic
  • mx369

Posted March 10, 2011 - 05:50 PM


Going uphill about a MILE in a couple months. So we have a 10 and 09 YZ 450. What kind of jetting should I use? Or would just adding some U-4 to gas or running it straight take care of elev change?

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  • ttr250dude

Posted March 10, 2011 - 06:46 PM



This would be a good place to ask too

  • YamaLink

Posted March 11, 2011 - 05:55 AM


I go from 2500 to 9000 sometimes. Jetted spot on for down low and then I turn the fuelscrew when elevation gets up (on the 09 of course).

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