Does anyone know the specific differences between the European and US versions of the current generation of parallel twins that account for the differences in rated output? I know most people will want to point to Euro5, but the BMW website says that both the US and European model of the F900 are Euro5 compliant.
US Specs
https://www.bmwmotorcycles.com/en/models/roadster/f900r/technicaldata.html#/section-technical-data
UK Specs
https://www.bmw-motorrad.co.uk/en/models/roadster/f900r/technicaldata.html#/section-technical-data
I am wondering specifically if it is a fueling difference, cam profiles, ignition timing, exhaust tuning, measurement strategy, or some other difference.
US Specs
https://www.bmwmotorcycles.com/en/models/roadster/f900r/technicaldata.html#/section-technical-data
UK Specs
https://www.bmw-motorrad.co.uk/en/models/roadster/f900r/technicaldata.html#/section-technical-data
I am wondering specifically if it is a fueling difference, cam profiles, ignition timing, exhaust tuning, measurement strategy, or some other difference.