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DRZ Jetting Yosh with spark arrester VS without

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I recently bought a 2007 drz400sm with those mods:

440 big bore athena

hot cams (intake and exhaust)2003-1E and 2003-1IN

3x3 air box mods

FCR39MX

Yoshimura exhaust.

The bike was jet to run without cork in the aftermarket pipe but I need to run it with the spark arrester in place.

Elevation is 500' from sea level.

What shall be the best Jetting setup?

Regards,

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Eddie,

I don't know where the carb come frome... but it was brand new when bought.

I guess the main jet is 160 (the bike's seller told me that the main jet was the one given with the carb and also told me that you gave the jetting infos when he did the mods. Unfortuanaly, I don't have his username) :S

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