Let's say it improves fuel economy by 30% - just an optimistic guess as they don't list any hard numbers. So my 300 that gets around 23 mpg goes to 30 mpg. Riding 2000 miles per year (I don't ride nearly that much BTW) I'd save $80 a year at $4 per gallon. At $775 for the carb that's a lousy payback.
FWIW, my Honda 250 gets 30-35 mpg with its inferior EFI.
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'15 YAMAHA WR250F, '75 YAMAHA TY80 Gone: '00 380 EXC, '03 EC300, '07 YZ250, '07 250 XC-W, '08 YZ450F, '12 CRF250R
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