The latest shop bike, a 2015 Yamaha Tracer, has been a dream since we got it but one gripe that has always been there is that the fuelling is snatchy or a bit jumpy at mid throttle, lower RPM.

It was a known issue on the earlier MT-09 models (sharing same engine) and it is there because of how little fuel Yamaha give these bikes in lower RPM in order to pass emissions regulations - it basically runs lean.

So to fix this we got the bike over to Gary in MotoTuning.ie

The video below should explain exactly what is motorcycle ecu flashing.

http://www.youtube.com/watch?v=eEepr8bO0jQ