Here is not much information about the features of the logic of atmospheric motors with Med 9.1 ECU. For better understanding ECU logic for atmo VR6 engine with ECU 9.1 and without EGR, I traced logics and made pdf files with English parameter names:

From acceleration pedal to request charge:
 https://drive.google.com/file/d/1ocpAElOcYyqo7ZSt7iB_C4nymQpNAqC5/view?usp=sharing

From request charge to throttle valve opening:
https://drive.google.com/file/d/1nI4XCaY8fBYU1vvoYkZ-2fNdSRuHwSdK/view?usp=sharing

From MAF to modelled air filling via throttle valve:
https://drive.google.com/file/d/11VyT0MlHLkbfGFQ4Z7WrVMHliTfgveMU/view?usp=sharing

From modelled air filling via throttle valve to predicted intake air charge:
https://drive.google.com/file/d/1PewQiaNFE9Pm-M4Iy14lwL7-A6icF88Q/view?usp=sharing

From predicted air charge to fuel injection time:
https://drive.google.com/file/d/1sJrPMRaLFtmzXwg4Ke561nNwJP8NQ1xo/view?usp=sharing

From engine rev to KFMIOP and maximum available indexed torque mimax_w:
https://drive.google.com/file/d/1GYleAEZd5y7sAytoVxBmb0ysDFHlstmS/view?usp=sharing

From lambda correction and request torque mrfa_w to LAMFA rk_w_KFMIRL_mibas_w:
https://drive.google.com/file/d/1A05SVrmh_pZST4feFHxRjIJx_pZp3Pbb/view?usp=sharing

From MAF to air charge via throttle valve:
https://drive.google.com/file/d/1WmNIysiTTuEDpYwJi10K86p0uzG6D2Pv/view?usp=sharing


It may be useful for someone.