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2009 CRF450R won't rev out, hitting rev limiter early

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I was in a harescramble this past weekend and on the 4th lap I hit a 4' log jump (as I did every lap). I went to get on the gas, and the bike seemed like it was hitting the rev-limiter way early like around 4000 rpm. I was able to ride the slower sections just fine, but when I got to a staight and needed to put the hammer down same thing. It feels like the rev-limiter is kicking in early and makes the bike surge. I could pull the clutch in and rev-it just fine 8000+rpm, but when it's under load the bike wants to hit the rev-limiter. It did it about 6 times, and I pulled out of the race, not wanting to do any damage to the bike. I want to think that the bike went into a safe mode, but I don't know. I hit the log jump pretty hard, and my first instinct was to look for loose wires, but can't find any. The bike runs fine, idles fine, starts fine. I plan on stripping the bike down this week and going over everything, but I think my problem is electronic. If anyone has come across something like this please let me know. I am the original owner of this bike (purchased 02/10) and this is the first issue I've ever had with it, besides flaming out. It's got 135hrs on it.

Here's what's been done to it:

Eddie's Re-Map

35oz trailtech flywheel

FMF 4.1 TI RCT Exhaust w/ Megabomb Header

Rekluse Z-Start Pro

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I have another tank with a pump that I can throw on to see if it solves the problem. I have already changed out the fuel filter once just to see if it causing my flame out issues, so I'm faniliar with the procedure. I hope that this can solve my problem, but I'm doubtful because I would think that would affect it when I revved it to 8K with the clutch in.

Could it be the throttle position sensor? Anyone ever had one go out?

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check the ground where it bolts to the radiator bolt on the right side.

Ground is still connected, gave it a slight tug and everything is still tight. Wire looks to be in good shape and taped into the loom. I checked continuity between the lug and the frame and it's good. I also took a resistance reading of 6.5 - 8ohms between the lug and various parts of the frame.

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I know this is an old post but I'm having a similar issue on my 09 crf450r. What ended up being the issue?

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