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2009 crf 450 w/ vp u4.2

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2009 crf 450 w/ u4.2

does anyone run it in there 09 does it mess anything up? pump or anything please let me no thanks

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2009 crf 450 w/ u4.2

does anyone run it in there 09 does it mess anything up? pump or anything please let me no thanks

That is all I have ever run in my '09. Runs great and no problems at all. Definitely improves the overall powerband. It is addicting.

As one extra step, I do seal the vents after each ride on the gas cap to keep the remaining fuel fresh instead of draining.

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I wouldn't let it sit in the tank for a long time. If allowed to evaporate the gum could foul the fuel pump.

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if fine w/ the pump an stuff? nothing gets sticky

Never had a problem with the pump or anything getting sticky. VP corrected that issue with 4.2 as the original stuff was nasty on my '07.

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