Interesting 8 pin HEI issue

First off I had a bad ignition switch and fried the hei (don't ask lol). I replaced the module,and he car is running great. I'm currently getting ready to add a procharger so I have an FBO limiter plate that I'm using to lockout timing.
Well with the distributor locked and vacuum advance plugged at about 4k rpm its advancing about 6*. What the hell is up with that? Is it a bad module from the parts store or is there advancement built into these things?

Tom
How would a bad ignition switch destroy your modual? It would either supply power on not .