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wot bog

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I recently rejeted on my 450x 05. 170 mj 55 leak, stock pilot, and ncvs needle. Over the weekend when racing my friend on a dirt road im going fast already I pinned it and it started missing. I backed off throttle slightly and it accelerated. What needs to be adjusted? Fuel mixture ,too big main.I have a r cam 05. aftermarket can, and air box is opened. Temp was 75 to 80 deg sunny lower humidity. This was the first chance I had to really open up the bike since rejetting.When I backed off throttle slightly it ran very strong pulling hard.

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I'd say you either hit the rev limiter or jetting is still slightly lean. If you're sure it's not the limiter, try a 172 main jet.

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Your stock header, stock porting, stock compression means 165 main max depending on altitude.

I'd go 160.

My '05 cam, DR D piped, Stage 1 porting likes a 170 under 3000 ft.

And add a merge racing pump linkage spring and a 55 leak jet for more throttle snap.

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