#21167, "RE: pockelogger timing advance" In response to Reply # 3
you can get up to 40 deg advance if you are at part throttle
at full throttle stock I've seen, at most, 20 degrees advance. with the safc leaned out -10% at the top end, the timing now goes up to 23 degrees advance. it seems the less fuel the computer thinks is going into the engine, the less load it thinks is on the engine, and the more timing it will give you (that's just a guess, though)