COMPUSHIFT II Manual – COMPUSHIFT II Manual
Monitoring & Tuning Your System
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The default is Normal.
If your setup causes the TPS to send a reversed signal (4.5 V at zero throttle and low voltage at max throttle),
change this setting to Reversed.
TPS Direction
Normal
4.2.23.4 TPS Ground
Use this screen to tell COMPUSHIFT II whether or not your setup needs a grounded throttle position sensor (TPS).
If you are connecting to an existing engine management system that has a TPS, that system will provide the
ground, and you should set this setting to "Off".
If COMPUSHIFT is the only device connected to the TPS, then this setting should be set to "On".
TPS Ground
On
4.2.23.5 MAP Sensor Ground
COMPUSHIFT II can use a MAP (Manifold Absolute Pressure) as part of the shift and pressure control system. This is
most often useful with engines that use forced induction (turbocharging or supercharging).
If you are using an engine management system that includes a MAP, then you can use that existing sensor for
COMPUSHIFT II. In that case, your MAP sensor is already grounded, and you should set the MAP Sensor Ground to
Off. If you are using a MAP solely for COMPUSHIFT II, then you should set the MAP Sensor Ground to On.
MAP Sensor Ground
Off
4.2.23.6 Engine Temp Sensor Bias
COMPUSHIFT II can use an engine temperature sensor as part of the shift and pressure control system. If you are
using an engine management system that includes a temperature sensor, then you can use that sensor for
COMPUSHIFT II.
In that case, your temperature sensor is already biased (powered), and you should set the Engine Temp Sensor Bias
to Off.
If you are using an engine temperature sensor solely for COMPUSHIFT II, then you should set the Engine Temp
Sensor Bias to On.
