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New WR Owner, bike hesitates

2 posts in this topic

Hey guys, I'm new to the WR450 world, but have owned WR250x, DRZ, 625 SMC, and wanted a street legal dirt bike so I picked up this 03 Wr450f yesterday. I went for a short ride after I got home and it has quite the hesitation when you crack the throttle from just a crusing speed. It's got a full FMF exhaust installed and dynojet stickers, but theres definitely something off with the carb. Anyone know what jetting should be ran with a full FMF exhaust, rode between 0-1000ft elevation and 10-30 degrees C?

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