I have been battling with an E38 L76 in a Nissan Patrol that won't come out of rev limit when it hits the rev limit until the throttle is released, it is a manualised auto with no vss, no MAF and no TCM. I have found the rev limit is is using is B5210, rev limit by gear, in fact only the neutral/park limit not the in gear limits which I have proven by setting the gear limits to zero. B5209 which is supposed to be the overall absolute liiter does not work at all. The cal is a 12597121 and the os 12614682. I have another vehicle of similar design, engine and ECU that is running a 12607218 os and a 12607217 cal which dosen't have these issues, unfortunatly I have not been able to do a full flash of the one to the other, the vehicle won't run. Is this a case of buy another E38 with the know working os and cal as a start point?