Yet another Jetting question

I was wondering what are some of the indications of the bike running too lean? I have stock jetting on an 04 WR450 and it is unplugged with a Yoshimura TRC pipe. What should the jetting be?

buy a JD jet kit. it is fool proof.

I was wondering what are some of the indications of the bike running too lean?

You will get a lot of popping on deceleration. Check the spark plug color.

I was lucky with mine, the jetting was all sorted out before I bought it.

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