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Any used a JD kit in a '12 300 XC

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From what I understand, the JD kits are designed to help you correct your jetting. They have done the research to guide you to install the correct jetts & needles for you elevations and temperature. I used a JD jetting kit on my 09 300 XC-W and and it did dial in the jetting perfectly from the bottom to top. But then I had my carb bored and installed a divider plate in the carb by RBDesigns and that threw off my jettingfrom the JD Jetting guide and then I was back to experimenting, but with the JD Kits. I don't know if they are worth the $80.00 or so. I am waiting to 2-stroke fuel injection and will be glad when I never have to jett again!!! I am no good at it and I hate it!!

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Tell me about it.

I am at 3000 ft and have her tuned pretty good (I think) but have been told to try the N3CH needle from a friend on TT. Have you tried this needle?

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the stock 300 came with a overly rich needle

switch to a leaner needle and it should clear up.

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