MoTeC M8 - Manual (Page 20)

18 Installation
When using separate REF and SYNC sensors the alignment of the two
sensors relative to one another is critical. Ensure that the sensors are aligned
correctly for the type of trigger system being used. Refer to the appropriate
drawing. Allow for any slop in the distributor drive system if the SYNC signal
is derived from the distributor.
Exhaust Gas Sensor (Lambda Sensor)
The ECU may optionally use a wide band exhaust gas sensor for data logging
or closed loop control of the Air Fuel Ratio.
The sensor should preferably be placed within 0.5 m of the collector pipe on a
normally aspirated engine or 0.5 m of the turbo on a turbo charged engine. If
placed too close to the exhaust outlet the reading may be effected by the
outside oxygen.
The sensor can be contaminated by exhaust manifold sealants, use exhaust
gas sensor friendly sealants.
The sensor must reach correct operating temperature (>400 °C) before useful
readings can be taken which may take a number of minutes depending on the
engine load. The sensor has an internal heater which adds about 200 °C to
the sensor temperature.
The lifetime of the Sensor will be significantly reduced by leaded fuels.
At the end of the sensors life it becomes slow to respond and won’t read
richer than about 0.85 Lambda.
Refer to the MoTeC Wide Band Lambda Sensor Tech Note for more details.
Refer to the MoTeC Wide Band Lambda Sensor Drawing for wiring and ECU
setup details.
Wiring
Wiring Drawings
Refer to the Loom wiring diagram for the loom wiring details. Refer to the
drawings at the back of this manual for more general wiring details.
The wiring details for the REF and SYNC Trigger Sensors and the Ignition
Module are specific to the type of sensors and Ignition system. MoTeC can
provide wiring diagrams for most Trigger Sensors and Ignition systems.