Intersting story. Someone from Norway called at the E32 bimmerboard for help. He had installed in his semi racer E30 an M70 V12 and a manual gear from an 850 CSI and could not get the power with more than 3.000 RPM, accdg to him maybe only 120 HP at 6.000 RPM.
Problem was that he changed from the automatic transmission to the manual one and there were some signals missing now from trans to ECU's/EML, I assumed.
Checked with my friends in Germany to solve the electronic problems and now the car should hopefully be ready to race in 4 weeks at the Nurburgring in Germany.
have a look at the pics
http://www.bimmerboard.com/forums/posts/202044