There was only 16 squadrons of RAF fighters that used 100 octane during the BoB. The Fw190A could not fly with the outer cannon removed. There was no Fw190A-8s flying with the JGs in 1945.
Apparently this issue is only regarding 90 of 450 something aircraft in service. Something to do with improper grounding/bonding of an auxilary power unit that won't properly protect the unit from a power surge.