There is indeed a PROcede for the M3, it's used to control methanol injection. I have absolutely no idea how the wires look in the M3's ECU box, but I very much doubt that the connectors are the same, so if you have the wrong harness, I'm pretty sure it would be blatantly obvious.
I would suggest trying to reload the firmware and maps from the Vishnu website, but I feel like that would have been part of the troubleshooting process Robert would have gone through with you. If not, give it a try.
E92 335i 6MT | Balloon White | Black Dakota Leather
PROcede Rev3 V5 | AE Quad Exhaust | BMW Performance Short Shift Kit | Gunmetal 19" M3 GTS Wheels | BF Goodrich g-Force T/A KDW 2 | AST 4100 Coilovers | Swift Springs F:280 R:560 | ER Charge Pipe | Tial Blue BOV | VRSF 3" Downpipes | VRSF 7" Intercooler