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2004 525exc

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I purchased this bike about 4 months ago. I did the required break in period like the book shows. I took it in at 15 hours for it's first service. I told them it was popping(backfiring) very loudly when you come off the throttle. They said that is a normal situation for a stock bike and it needed to be leaned out. They installed a new needle "ocem v" in it. I took it out and it still pops not as bad but still happens. I am using a zip ty fms01 fuel mixture screw at 1.5 turns out. Does anybody have a setup that seems to be a good starting place. Thanks in advace. Don C .

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Up your pilot jet and buy the JD jetting kit for his awesome needles and good basic instructions. You should have no loud backfires if you are jetted right and the ocassional small backfire pop is to be expected. :thumbsup:

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