Been a while since I last updated this story. After a lot of fiddling with the software on my laptop, I got INPA to work as well as NCSExpert. I made quite a few more changes to the car's coding options, one important one is displaying the speed in the central display in KPH. It makes it much easier to zip around town and not exceed the speed limits too badly. I still can't find coding to get the cruise control to show kph....but it works fine as is, it is just odd that seems to be no fix for this. I also replaced the tail lights with euro ones to have the yellow indicators.

Having INPA operational is great as I could now read the engine fault codes (Needed some lines of programing in Inpa to make the n57 35d accessible...my son sent me the files needed from my desktop in the USA, nothing is easy!). The error with the pre-DPF pressure is gone now that the DPF has been cleaned but (as they indicated in the shop that did the DPF) there was a persistent error on the glow plug module. I finally replaced it last weekend and so at last, no more check-engine-light!!

I did the GP module swap without removing the intake manifold. To make it easier I bought a set of magnetic sockets and a long 1/4" extension. Before undoing the nuts on the GPM, I removed two bolts, one aft of the oil filter, holding a coolant pipe in place, the other one holds the dip-stick tube in place. This provided just enough space to move things about and pull the module. As in the Youtube video, disconnected the electrical connections before undoing the nuts holding the module in place. Ofcourse it is very messy, I sacrificed three sets of gloves which were soaked in black crud.

Also, I finally got help from somebody on a coding forum with the right instructions to get the radio to work properly.

CHOST
LAENDERVARIANTE_GT
ece
AMBANDS_HST
aktiv

CTUNE
RDS_AF_FUNKTION_CCC
rds_ein_af_automatisch
LAENDERVARIANTE_TUNER_ANT
ece
TP_FUNKTION_ANT
tp
REGIONALISIERUNG
reg_ein

CAPPL
LAENDERVARIANTE_TUNER
ece
TP_FUNKTION
tp
TP
aktiv
TMC
aktiv
AMBANDS
aktiv
RDS_AF_FUNKTION_CCC
rds_ein_af_automatisch
CA_TMC
aktiv
TMC_REGIONAL_C
nicht_aktiv

I was on the road (well, traveling by air really) for almost a month during August/September, getting some work organized before stopping at the IAA in Frankfurt for a day (great event :-) Before I left my house in Portugal, I washed the X5 and put the cover on it. When I returned she fired up without any hesitation. I am still very happy that I shipped it despite all the challenges!

Attached Images

  

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.