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Dyno Jet or Factory Pro


GimPin

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I have a 98 with Erion Racing Slipons ... it doesnt seem to be jetted right ... feels like it might be lean at full throttle. Since I will be jetting the carb I will also be thowing on a K&N filter. The question is the debate of Factory Pro kit (no drilling) or Dyno Jet kit. Was talking to a tuner and he said the dyno jet was superior and that the slide drilling was nessesary to get a good tune and driveability.

Opinions on either or both

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I have the dj kit and used it with a stock air filter. It cured my mid rpm stumble but killed my gas mileage. Since I'm going turbo I no longer need it. However I do have the dj kit used if you would like to buy it...cheap. I'll sell you the pre drilled diaphragms,jets and needles for $100 plus shipping if you want it. The beauty of it is you can keep your stock diaphragms on the side in case you want to switch back. My .02

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Dynojet, baby. Their R&D is far superior and not based on "luck" in order to stumble upon what works.

(sorry, FP fans! I will admit: some FP stuff works....from time to time, when they get lucky...applications WILL vary...)

M.

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It may vary from bike to bike, but everything I have read says Factory Pro is superior.

I have FP installed in my VTX1300 and it works perfect. Stories of problems with DynaJet on that bike are legend.

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  • 2 months later...
Easy to put in?

That depends on what you call easy. The clutch basket will need to be removed to gain access. Not too difficult if you have a clutch holding tool and the correct 12-point socket for the clutch hub nut. Can be done without the clutch holding tool by having a friend stand on the rear brake with the tranny in gear. The only other thing I considered remotely difficult was holding the roller-arm up to get the new star bolted on. Make sure you use some blue loctite on the star bolt.

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