2008 328xi,
Replaced faulty DME with stalling issue with a second hand unit from a 2011 328xi. Wrote SK to CAS. Cleared faults and adaptations. Car starts no problem.
Engine has loss of power.
FC 2fa4 incorrect data record
Test plan states CAS issue.
Programmed DME and CAS module to latest level.
Same issue. Re-installed original DME, downgraded CAS firmware, and wrote original ISN to CAS. Cleared faults and adaptations. No faults, engine runs fine.
Programmed original DME to latest level, same software version as donor DME. Still no issues. Reinstalled donor DME and wrote ISN again, same fault as before, and loss of power. How to correct?
Thanks,