The number of parameters that can be changed is dependant on the application, however here are some of the typical changes:

• Shift Speeds – Increasing the speed in which the gearbox changes gear.
• Torque Limiters – Increasing the TCU torque limiters ensures the transmission cannot limit the performance of the engine.
• Hydraulic Pressure – Increasing the hydraulic pressure can increase clutch clamping pressure to prevent clutch slip on highly tuned vehicles.
• Shift Points – Changing the rpm limiter of the engine is often not possible without modifying the TCU software.

  Some TCU’s have a higher level of manipulation available and advanced options like the following can be activated: Launch Control, Full Manual Mode, Kickdown Delete. Please note: Not all TCU’s will ‘need’ to be tuned and not all TCU’s can be tuned, it depends on the application and the desired vehicle performance.