Is it likely that the majority of e53s out there are running the same software that came from the factory?
I'm curious if there were many substantial developments/software changes in the early years. Should an attempt be made to upgrade software at least to a 2010-2012 era ?
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2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.19) -> 100k 9.21
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SOLD : ( 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.19) -> 205k (9.21)
SOLD : ( 1997 328is Coupe - Hellrot Red
SOLD : ( 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP
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