i have a stock 2t minarelli and it always does 42 and i weigh 185.stock weight were 5 grams and i bought a performance variator with 4 grams and still hit 45 but better take off.with 5 grams and performance variaror it does 45 and 50 on a slight hill.im glad i bought a jonway cause its been good to me for 1400 miles.my rpms at 42 are 7000
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