Haltech E6A - Manual (Page 33)

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RPM Limit Type: The RPM Limit can either be a fuel cut or an ignition cut. This field
determines what form of limit will be used. Be careful using an ignition cut on an
engine with a catalytic converter, as the unburnt fuel can damage it.
Units: The Haltech E6A programming software can display parameters in either Metric or US
units.
RPM Mode: The E6A fuel and ignition maps may be arranged either in 500 rpm increments
to 10,500 rpm, or in 1000 rpm increments to 16,000 rpm. Select the high - or low -
rpm mode here. Changing settings alters the way the ECU reads the Maps, and will
change the tuning of the engine dramatically. Do not change this setting once tuned
unless necessary.
Road Speed Value: This value calibrates the Road Speed reading. Some applications in
Advanced Mode can not use the Road Speed input trigger, and this field will not be
displayed.
Trim Control: The optional Trim unit can be used to control one of several parameters. This
field selects the controlled parameter. If there is nothing connected to the trim plug, the
trim will have no effect (except with boost control). The available functions are :
Fuel (Fine) ±12.5% adjustment of fuel.
Fuel (Coarse) ±50% adjustment of fuel.
Ignition +7 to -8 degrees adjustment of ignition advance.
Ign Trailing +7 to -8° adjustment for Rotaries only
Boost Control Boost trim for Wastegate control only.
Spare Input Function: The Spare input is an analogue input similar to the Trim Control
input that can be configured for one of several tasks. Its function is set by this field.
The available functions are :
General 0-5 volt input; no effect on ECU operation.
Fuel (Fine) ±12.5% adjustment of fuel.
Fuel (Coarse) ±50% adjustment of fuel.
Ignition Trim +7 to -8 degrees adjustment of ignition advance.
Ign Trailing Trim +7 to -8° adjustment for Rotaries only.
Baro Sensor Barometric Pressure Sensor.
Exhaust MAP Sensor Exhaust Pressure.(does not affect on ECU operation)
Care must be taken when setting this field. The circuit is biased to 2.5 volts. Therefore,
if there is nothing connected to the plug, the input will read 2.5 volts. If one of the
trims is selected, there will be no effect. But if the Barometric Sensor is selected, the
reading will be incorrect, and will have a large effect on the operation of the ECU.
2nd MAP Sensor: This field is only accessible when the Exhaust MAP Sensor is selected on
the Spare Input Function. It tells the software what sensor is being used (either 1 Bar, 2
Bar, or 3 Bar sensor) and how to calibrate the reading.