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do i have to re-jet for a pipe?

481 Views 1 Reply 2 Participants Last post by  j440
i have a 20mm sheng wey carb i got with my bbk and i was wondering if i have to rejet it for a fmf pipe? i was told it came jetted to run one but wasn't sure.
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in theory you should always rejet when you change your intake/exhaust flow but see how it runs and if its not top notch then jet it.
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