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05 YZF450 U-4?

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I am running the JD kit w/ a Dr. D pipe. If I start using U-4, will that require re-jetting. Not famaliar w/ the necessary tunning required (if any) for the switch over to U-4.

Thanks in advance

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well you need to understand that you are adding oxygen because its in the fuel so you will need to start jetting ritcher to get the most out of it and correct the mixture------and you need to not ever let the u4 sit in the bike, the tank and carb must be drained after riding, and the fuel must be stored in a sealed metal container in the dark that stays below 85 degreese ,--------the fuel looses its oxy fairly quickly ,-----and if you open a container use it quickly and dont put the left over fuel back in the unused fuel container--------and the stuff will run you and the wife out of the house if you get the smell in it -------take it way out back to mess with it!!!

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