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to be clear - fokker has a 2004 which runs a 7.8 dme and pepper has a 2000 which runs a 7.2.
the 7.8 is very open source and easy to program. lots of info out in the wild for the 7.8.
there is not a lot out there for the 7.2. porsche keeps this info very proprietary so what is known has been reverse engineered by people dumping the ecu and trying to extrapolate what all the little bits and bytes mean. that takes a lot of work and those that have done it (softronic, etc.) keep that info close (a) to get some return on investment, and (b) so it doesn't become obvious that even the pros haven't cracked the entire ecu (ie, iirc most of the pro tunes you can get for the 7.2 play with fuelling and rpm limit but nothing touches the timing).
so good luck. there are other (older) threads here by people who have attempted, but none that have fully succeeded. the 7.2 wasn't around that long so not a lot of incentive to invest the time. one of the work-arounds is piggyback ecus (or even a potentiometer connected to the maf signal) to fool the dme into fueling differently.
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