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herrzausk

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  1. herrzausk

    ybr125 with 165 ccm zylinder: do i need to modify the injection-system

    herrzausk posted a post in a topic in Yamaha Workshop
    dear all: i am mounting a 165 ccm big bore kit on a yamaha ybr125, made 2012. question: do i have to modify the injection system, so that it delivers more gasoline in the bigger cylinder? or are there sensors, that do that automatically?