The master fuelling algorithm settings are set here.

Primary/Secondary Load:
These allow you to choose the source for load determination for the primary and secondary VE/Ignition tables. For an NA/ITB engine, you would normally use TPS (Throttle Position) for primary, and fit a throttle sensor. For a forced induction engine, you would normally use MAP (Manifold Absolute Pressure). For more information, please see the section on fuelling model.

Type:
Here you can select the engine's firing type, such as 4-Stroke, 2-Stroke or Rotary. This box may be greyed out on some models of ME ECU.

Displacement (cc):
The size of the engine, in cubic-centimetres - used as part of the VE fuelling equation. For example, if your engine is a two-litre, you would set this to 2000.

Number of Cylinders:
Set this to your number of cylinders or Rotors (if on a Rotary). Note it may be greyed out in some versions which do not have multi-cylinder support such as some Plug-Ins.