ATM Chiptuning · Mossel Bay
Gearbox & TCU calibration
For supported transmissions, we coordinate the gearbox and engine calibrations so torque delivery, shift behaviour and protection strategies work together.
One driveline
The engine and gearbox communicate constantly
Modern automatic, dual-clutch and selected automated transmissions use a transmission control unit to decide when and how the gearbox shifts. It also exchanges torque requests and limits with the engine ECU.
An engine calibration can reveal factory shift behaviour that no longer suits the available torque. Where the platform supports it, a matching TCU calibration can improve that coordination without trying to hide a mechanical problem.
Not every gearbox is programmable, and not every vehicle needs TCU work. We identify the transmission and software first, then quote only the work that is supported and useful.
What may be calibrated
Only the functions the transmission supports
Shift timing and response
Shift scheduling and response can be refined for the vehicle's intended use where the control strategy allows it.
Torque request coordination
The engine and gearbox torque models can be aligned so delivery remains predictable through a shift.
Clutch and pressure strategy
On supported units, relevant clutch or pressure maps may be adjusted within an appropriate mechanical specification.
Mode-specific behaviour
Drive, sport, manual and towing priorities are discussed before any supported mode behaviour is changed.
Assessment first
Software cannot repair worn hardware
Harsh shifts, slipping, delayed engagement, overheating or warning messages can indicate a service, adaptation, hydraulic, clutch or internal mechanical concern. Increasing torque before understanding that condition can make a problem worse.
- Fault-code and warning-light review
- Transmission identification and software support check
- Service history, fluid condition and known platform concerns
- Current engine calibration and hardware specification
- Daily driving, towing and load requirements
Questions clients ask
What to know before booking
Does my gearbox need to be tuned with the engine?
Not automatically. It depends on the vehicle, the requested calibration, the gearbox's factory torque strategy and whether its controller is supported. We confirm this before quoting.
Will TCU calibration fix a slipping gearbox?
No. Slipping, overheating, delayed engagement or mechanical wear must be diagnosed and repaired. Calibration is for a mechanically sound, supported transmission.
Can you make every shift faster or harder?
The goal is appropriate, predictable behaviour—not maximum harshness. The specification depends on the transmission, its condition and how the vehicle is used.
Can you calibrate the gearbox without remapping the engine?
Some supported platforms allow useful gearbox-only work. We still inspect the engine software and torque relationship so the two controllers remain properly coordinated.
Let us identify the complete driveline
Send the make, model, year, engine and gearbox. We will confirm support and explain whether engine-only or combined calibration is appropriate.