I'm kinda curious as to what TMC runs for total timing as well. I'm running 42* advanced with the tweecer. What would that be comparable to with the spout in, 18*?
Not a constant, at least not on a 94/95 EEC. The EEC has a table of values for total timing based on RPM & load. It assumes 10* base timing and advances enough to reach the value in the tables.
The number in the table is the amount the EEC adds to the base. Most tables have 24-25* as the top number and that is not enough advnace for a high performance engine, so 25+10 = 35* which is right in the area you want to be.