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View Full Version : better gas for my 05 400ex


buster024
05-15-2006, 11:32 PM
Any recommendations on a more performance oriented fuel for my semi-stock (k&n) 05 400ex? I've been running super, but i'm curious if there are other options?
NCexRider
05-16-2006, 05:29 AM
You'll be wasting your money running anything higher than premium pump gas through a stock motor.
miller821
05-16-2006, 06:23 AM
Just run 93 octane and you'll be fine.