[new pipe!!] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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new pipe!!
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Posted by: jaredZ400rider

hey i was just wondering if i would need to rejet if i got a yoshi RS-3 pipe and if so what size jetting for a z400?

Posted by: motomanmike

I'm not sure about the size jets, but you will definetly have to rejet, i had to up mine by five just taking the air box lid off so i know you will with a full pipe, the pipe should come with some literature to get you towards a baseline and the fine tuning will come from your needle position