Yamaha YZF-R3 Stock Engine Compared to a Tuned Engine 2015/2017

Yamaha YZF R-3 This is an engine that was tuned by Spears Racing 

2015 Stock Yamaha YZF R-3, This is a comparison between the “stock first run” and the latest Dyno work done.The second line graph is a Stock exhaust,stock engine 87 octane fuel, Spears Racing 415 chain conversion kit 18/56 sprockets, Power Commander V.

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