HEI 8 pin module

Quick question, I hope...

If using the 8 pin module for conversion and don't connect the computer terminal lead, does the module have a built in advance at idle? I'm having a bugger of a problem trying to track down an ignition gremlin that acts like it's too far advanced when I try to start it.

360 LA, 17* initial advance. I've double checked the initial advance to make sure I'm on the compression stroke, distributor is in right, wires are in correct firing order.

Thanks.