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.

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