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Just bought fzs 600 1999 Tuning question.
#8
I think the general consensus is that this engine runs rich from factory so not sure main jets would do much. You could raise the needles a notch or 2 . I think Yamaha got this engine as good as it gets . As an after thought ,I have never seen any horsepower charts before and after tuning for the 600 either. Unlike the thou !
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Re: Just bought fzs 600 1999 Tuning question. - by bwizz - 14-09-12, 10:18 AM

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