Quote:
Originally Posted by derbo
All I know is the common number ZB number for GTS is this:
7845773
I help ItsGary remotely code his 09 E90. Ensure Fast Baud Rate is enabled since it's slow as hell without it.
The instructions we used were here:
##Instructions on GTS Tune
-Make sure your battery is good if not get a battery charge
-Open drivers door and turn ignition ON (cluster guage on)
-connect cable to obd connector of car
-Load Winkpf software
-Press (F1) comfort mode
-Press (F3) Update ZUSB
-Choose ECU GS40
-Press (F2) Choose ZUSB
-Choose ECU GS40 and next to it there will be ZB-Numbers..Find 7845773
-Click ok
-If you have done it correctly so far you will see at the top Assembly Identification number 7845773 (M3 GTS assembly line file) and it will automatically reference the software 7845773
-Press (F4) Enter VIN ( make sure you double check you have entered the correct VIN numbers)
-click ok
-Press DONE (F8)
-Press (F3) Program
-Pop up window will say you can code the ECU 63 more times, click ok
-Flashing begins and you will have to wait till it reaches 100%
-once it reaches 100% it will pop up again saying you have 62 more times to program the ECU, click ok
-Programming again starts, wait until this reaches 100%*
-If everything is done correctly, then you will get a pop up screen saying programming done, click ok
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Thanks for the detailed write up! I've found out that GS40 is always chosen for any e9x dct which answers one of my questions but I also read online that the ZB number changes depending on the TCU part number. I've heard it from 2 people but I haven't gotten an explanation. I did see that 7845773 is the common ZB number chosen but I'm not sure how you find out if you need a different ZB number. The reason I ask is because a few of my friends with e9x m3's want the gts flash and I want to make sure I choose the correct ZB number for each car.
Edit: after more searching I think the only 2 ZB numbers for GTS flash is 7845773 which you listed above and 7848442. Not sure if that's a newer one but figured someone can chime in and let me know or anyone else wondering as well if the ZB number is always 7845773 for the e9x GTS flash.