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2006 WR250F jetting

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i have a 2006 wr250f, it has the ais kit installed and i just put on a titanium 4 silencer. the bike boggs when you give it full throttle. the idle and choke are a little off too. i changed the leak jet to 2 sizes larger than stock and it seems to idle ok, but it still boggs. i have tried changing the positions on the air screw, but nothing fixes the bogging. any ideas?

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Scroll thru the jetting sticky for a decent starting point (a bit time consuming but there's likely somebody riding under your conditions).

Get a JD Jet Kit for spare jets, needles, some basic guidelines, and throw in an extended air screw for ease.

Oh yeah, do all of the Free Mods....

Welcome!

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Yamaha's in australia were fitted with a 95 leak jet on the 2005 and I think a 70 on the 2006. Typically, the squirt duration os too small 0.2 sec. Smaller leak jet will give a larger squirt. I changed mine from 95 to 70 . This fixed it.

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