Satouf Posted November 5, 2016 Share Posted November 5, 2016 Hi everyone I made a big mistake with YBR injector model basically before I got my A license I had the YBR and wanted more power like u do. I purchased a engine with the big bore fitted to it and sold my old engine. But once fitted the bike keeps jerking when ridding and idle the reve counter jumping. I know now that the big bore is not ideal for the injector models. can anyone help me or give a stupid YBR owner advice please. Link to comment Share on other sites More sharing options...
finnerz89 Posted November 5, 2016 Share Posted November 5, 2016 My advice would be buy a standard engine, fit it and then sell - buy a proper big bike! Sent from my E6553 using Tapatalk 1 Link to comment Share on other sites More sharing options...
blackhat250 Posted November 6, 2016 Share Posted November 6, 2016 Has it an ecu ?. can you plug in and remap ? Link to comment Share on other sites More sharing options...
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