[jpnovak]

All of the electronic distributors have the same basic setup. It is very similar to EFI.

I am not specifically familiar with the MittelMotor but initial setup will be one of 2 methods.

If the Mittlemotor has a secondary clamp on the distributor body shaft (like the 123) follow this easiest setup.
-install the distributor with rotor pointing #1 TDC (make sure crank is set to #1 TDC. When you have twin plug you have which rotor tip is connected to #1. All TP caps will have an upper and lower row of contacts and the rotor will have an upper and lower contact tip. Check carefully.
-Go into the software interface. Set the entire curve to 0 deg timing.
-connect a timing light
-crank the car. Read the timing light.
-rotate the distributor body in the clamp until the timing light reads 0. The car may start when you actually get close to zero. As long as the entire curve is set to zero you can just complete the setup at 0 deg.
-Tighten clamp when timing light actually reads 0 deg timing.
- Go back into the software and set an actual advance curve.
- tune car to match the engine using the adjustable advance curve.

Now, there are a few distributors that do not have the rotatable body and have a fixed mounting point. In this case, these will have a software offset value that you adjust up or down (+/-). In this case, you would use the trigger offset value to zero out the timing. This is how most EFI systems work.

Hope you get this sorted. Try not to make it too complicated and use the same basic tuning practices that have been used for decades.