What is the converted value range of the cold start factor map FKSTT? My definition says X/1024 (this is from a publicly available damos for ME7.9.10), which gives a factor of 34.5 for -30 degrees C up to factor 1.38 at 90 degrees. Is that right? I would expect a quarter of the values, if not 1/8, at least in the lower ranges. Confused a bit...

Probably true (about the experience), nevertheleas, my previous car had only 5 as much fuel at -40 compared  to warm for cranking, not 20+ like here, so the question is justified.

I surely believe that, the maps I have seen for SAAB (I use them for E85 reference) give a factor of ~20 (this is still not 34 though ) for freezing cold, 50 for E85 (50 being max I believe for those systems, because the map is 50 flat downwards of -10 C). From what I read E85 is a bitch to get the cold engine started on, essentially only the gasoline contained in it contributes.

What puzzles me now is how come the old ECU I mentioned (beginning of 90s technology) had only 5x injection time over warm, and the only conclusion I have is that it had a totally different start-up procedure and did not have per injection / engine speed gain based reduction, so I can only assume that starting at -40 would take a lot more of cranking than on a more modern ECU.

Anyhow, I sorted out most of the things I wanted to.