Drivetrain

Torque Limiters

Internal ECU/TCU software caps that prevent the engine from producing more torque than the transmission can safely handle.

Why it matters

Common on ZF8-equipped cars. If torque limiters are active, you are losing power even though the engine could produce more.

What to look for

Torque actual capping below torque request at a consistent value. Often requires a TCU tune to raise the limit.

Related terms

Torque Request

The amount of torque the driver is requesting via the accelerator pedal.

Throttle Closure

When the DME reduces throttle angle even though the driver's pedal is at 100%. Used as secondary boost control to prevent overboost or protect the engine.

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