In Gear Target
In Gear Target Table
This sets the target Line Pressure when the Transmission Control function is holding the transmission in gear.
If there is a base map available for your transmission, it is recommended to import the Target Pressure tables from there.
If the transmission you're using has been rebuilt with upgraded components, ask your transmission builder what changes you should make to your target line pressures.
If there isn't a base map available, the best thing to do is copy information from an already tuned vehicle using the same transmission. You may be able to find some information from OEM service manuals as to what pressures are used.
If you don't have access to any sources of information, you can use base maps for other transmissions as a starting point. This approach can cause problems, such as excessive wear and/or harsh shifts, but it's better than guessing.
General Guidelines
If possible, start with the most relevant base map.
- Start with a higher line pressure and work backwards until the shifts feel less harsh.
- If you get slippage in the transmission while in gear, increase line pressure.
- More engine torque requires more line pressure.
Related Articles
Line Pressure Control
Line Pressure Control Most automatic transmissions use pressurised transmission fluid to control which clutches and bands are engaged at any one time in order to select the desired gear. The fluid is typically pressurised by a pump which is turned by ...Shifting Target
Shifting Target Table This sets the target Line Pressure when the Transmission Control function is shifting between gears. If there is a base map available for your transmission, it is recommended to import the Target Pressure tables from there. If ...In Gear Base Duty
In Gear Base Duty This sets the Base Duty Cycle of the Line Pressure when the Transmission Control function is holding the transmission in gear. If using Open Loop control: this is the duty cycle used. If using Closed Loop control: the PID control ...Transmission Line Pressure Control Wiring
Wiring Choose a pin which is capable of handling the current draw required for the Line Pressure Control Solenoid. See the workshop manual to determine the expected current draw. All Nexus DPOs are rated for 3 Amps, but some like the HBOs ...Transmission Line Pressure Sensor
A Transmission Line Pressure Sensor can be used with your ECU for mapping of Transmission Control tables such as Line Pressure Control, for datalogging and for Engine Protection purposes. A Transmission Line Pressure Sensor is a powered sensor that ...