Built for the EA824 & EA825 platform in the Audi RS6 Avant, Audi RS7 Sportback, and Audi S8 & more, this Stage 3 TCU package is engineered to control extreme power and torque from full Stage 3 engine builds.
This is total transmission control at maximum output.
Stage 3 Gearbox (TCU) Tuning
A full motorsport-level recalibration of the transmission control unit.Built to handle upgraded turbos, full fueling systems, and aggressive power delivery without compromise.
Required setup
Stage 3 ECU engine build
Upgraded turbos, fueling, and cooling systems
Reinforced supporting hardware (HPFP, LPFP, fuel lines, intercooling, etc.)
What’s included
Full custom TCU remap (Stage 3 calibration)
Maximum clutch pressure calibration for high torque capacity
Ultra-fast shift speeds under full load
Fully optimised shift strategy for high-power applications
Raised torque limits to match Stage 3 output
Reduced torque intervention during shifts
Enhanced launch control for maximum traction and consistency
Gear-dependent torque management for stability
What it feels like
Instant, aggressive gear engagement
No slip. No hesitation.
Holds gears exactly where power is strongest
Violent, rapid shifts under full throttle
Immediate downshifts on command
Driving characteristics
Controlled in normal driving.Extremely aggressive under load.
Adapts to driving style while maintaining full authority over high power.
Performance gains
Minimal shift delay at high torque levels
Maximum acceleration through every gear
Improved consistency under repeated hard use
Stronger, more effective launches
Why Stage 3 TCU
Required for managing extreme Stage 3 power levels
Protects gearbox under high torque conditions
Unlocks full performance of upgraded engine hardware
Essential for reliability and control at this level
Maximum pressure. Maximum speed. Maximum control.The gearbox, fully evolved for the EA824 & EA825 platform.
