When you will see this table
The Shift Point Load table only shows up when the Transmission Type in Transmission is set to Ford ZF 6-speed. Its output, a shift point load percentage, becomes the load axis for the shift point calculations in the transmission control logic, so it shapes when every automatic shift happens.
The axis: Engine Demand
The horizontal axis is locked to Engine Demand so the transmission always shifts based on the right input. Engine Demand is a measure of how much torque is being asked of the engine. It follows the throttle and pedal closely, but it is not a straight line, so 50% pedal does not necessarily mean 50% Engine Demand.
You can change the axis breakpoints. Select the table, press F3, then edit a value or add a new one. When you edit an existing breakpoint, NSP rescales the table values so the overall shape of the curve stays the same.
How to tune it
The output is a shift point load percentage. The rule of thumb:
| Change | Effect | Feel |
|---|---|---|
| Raise the values | Shifts happen at higher RPM | Sportier, holds gears longer, uses more fuel |
| Lower the values | Shifts happen at lower RPM | Calmer and more economical, can feel lazy |
We keep the table running from 0% at the first breakpoint to 100% at the last, as Haltech recommends, and shape the middle to suit the car. A common approach is to leave light demand close to a straight line for smooth cruising and bring the curve up faster in the upper half so the car holds gears when you mean it.
This table has a big effect on how the car shifts while cruise control is active. If the car hunts between gears on a gentle grade with cruise on, look here first.
Our process
- Start from a smooth 0 to 100% line and drive the car in normal traffic.
- Log Engine Demand, gear and RPM, and note where shifts feel early or late.
- Adjust one region at a time, in small steps.
- Test with cruise control on flat roads and on hills before calling it done.
Related: Transmission Control, Auto Mode Shift Points and Shift Duration. Want us to tune your ZF? Book a free consultation.
