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Old 01-05-2016, 11:01 PM   #308 (permalink)
ProDigit
EcoModding Apprentice
 
Join Date: Jun 2012
Location: Florida
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you can go as low as a 15/37t if it mechanically fits, without losing top speed.
If you want to improve MPG further, do 128:1 oil in the fuel.
In a 4 gal tank, that means pouring 4oz of 2 stroke oil in it.
You should get 95-105MPG out of it.
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