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Do I Need To Rejet????

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I Just Added An Fmf Factory4 Slip-on And Removed

The Air Filter Screen. Should I Have To Rejet? With

The Pipe Added, It Ran Super Crisp, But With Added

Flow(no A/fltr Screen) Seems A Bit On The Lean

Side.

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I just put on the white bros aluminum pro,had to re jet with the JD jet kit,I had 175 main and 42 pilot went to 180 main,45 pilot,1 1/2 turns out checked the plug tonight after motoing sat and sunday still had a little on the light side for me,will go up a couple sizes.

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