Here is the ignition map for my 75 Carrera 2.7 after convervsion to ITB EFI from Al Kosmal's x-faktory.com option#2 (EFI + ECU control of timing) and dyno tuning by Gary Bains at Bains Tuning (San Jose, CA). The engine is stock bottom end 2.7 S motor with SSI's, Bursch muffler:
