Here's a video of the engine running with a basic tune.
Megasquirt system, started at the 3rd/4th crank
Megasquirt system, started at the 3rd/4th crank
Fuel and Spark,
I have ditched my MSD6A, everything is controlled by the Megasquirt
On the 28th, someone is coming to tune it for me.

I used the adapter that DIY sells and recomends
I'm sure you've checked this, but make sure your using a 9 pin straight through cable and not a null modem cable, when I went to buy my cable i grabbed the first 9 pin one i saw which happened to be null modem, doesn't work.
I think bottlefed70 advice will probably set you right.
Steve.