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Power Up question?

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CRF 150: Ok i took all your advice and heres what i did:

Took out the baffle

Took out the airbox snorkle

Installed a 42 pilot jet

Installed a 110 main jet

Installed the new needle set clip in the center position

Elevation around 750 feet average temps 60 degrees approx.

My questions are:

Everything I read I couldn't decide between the 115 and 110 main jet, should I have put the 115 in?

Do I need to get an aftermarket air filter right away or is stock ok with all these mods?

PS: My son has not road the bike yet we are going tomorrow to see how this effected the bikes performance.

Thanks again!

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