Chip,
The add on board has its own CPU and program memory .
The conversions are designed to be retro fitted to any cossie weber ecu without making a single chip modification wether its running 200 or 600 bhp.
The board takes the ignition signle firing point and calculates backwards the dwell angle required based on RPM and load demand.
The dwell strategy can be selected from a range depending on installation if needed but this is an UDF
Also, to an extent the ignition amplifeirs are semi-intelligent (like most) as they charge the
coil and fold back the current when the coil is magnetically saturated.