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View Full Version : Putting some booster on the gas



Stock 400 rider
05-02-2004, 08:02 AM
Is it bad for the engine?
I race a YFZ450 with onbly 95 octane and I know how much better it will run with high octane. I just bought 2 bootles of booster for 2 bucks only and now I`m concerned. VP here is really expensive.

Any help?