MoTeC M880 - Manual (Page 21)

MoTeC Installation 19
Installation
Throttle Position or MAP Load Sensing
The load point for the fuel and ignition calibration tables may be based on any
defined load measuring sensor.
The most commonly used are the Throttle Position sensor or the MAP
(Manifold Pressure) sensor.
Mass Air flow (MAF) sensors are also used particularly where regulations
state that the sensors cannot be changed from the factory fitted sensors.
Turbo Charged Engines
Normally use Manifold Pressure load sensing (connect the MAP sensor to the
inlet manifold).
A Throttle Position sensor is optional and will be used for acceleration
enrichment if fitted.
Normally Aspirated Engines
3D Fuel and Ignition Tables
Normally use Throttle Position load sensing.
The MAP sensor may be used to compensate for barometric pressure
changes by venting it to atmospheric pressure.
If Idle Speed Control is used then the MAP sensor should be connected to
the plenum or Manifold Pressure load sensing should be used. This is
required so that the fuel is varied as the idle speed control valve opens
and closes.