I need help from somebody who has been through this pain before.
I am fitting a full Yoshi zorst and OEM replacement K&N ait filter to my '87 FZR1000. My original plan was to fit a Dynojet jet kit to sort out tuning, but I have heard so many bad stories about them that I will probably no. I fitted the same parts to my '87 FZR750 (free-flowing zorst, K&N and Dynojet kit) and I could never get it to run properly under 4k.
I have the carbs off as one had a leaky float bowl gasket, so now would be a good time to change main jets.
Anybody know how much, if at all, to increase main jet sizes by? I can tune the low end with the needles and mixture screw, but I need a starting point for main jet size.
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