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Yamaha MX & Off-Road Dirt Bikes
'05 YZ250 jetting help
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[QUOTE="steve125, post: 942517, member: 20272"] This can be so true, but there is a way around this that will keep Rich's hair in place. :nod: :) Run the VP U4 or U2 depending on the engines octane requirements straight up, no mix with pump. :coocoo: Both fuels hit like pump and make more power on top and extend over rev. The C-12 provides excellent detonation protection, and improved throttle response, but has a tendency to smooth the power delivery. Bad for some, but good for others that want to lessen that hit. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
'05 YZ250 jetting help
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