Built for the EA824 twin-turbo V8 in the Audi RS6 Avant, Audi RS7 Sportback, and Audi S8, the Apex Stage 2 Package is the complete, no-compromise upgrade for this platform.

Airflow. Fueling. Transmission. All aligned.

Apex Stage 2 Performance Package (ECU + TCU)

A fully integrated setup combining essential hardware upgrades with precision engine and gearbox calibration.Built for maximum usable performance without stepping into full Stage 3.

What’s included

Hardware:

• High-flow downpipes

• Performance intakes

• Upgraded HPFP (high-pressure fuel pump)

• Upgraded HPFP fuel lines

Software:

Engine (ECU):

• Custom Stage 2 ECU remap

• Increased boost targets

• Optimised ignition timing under load

• Fueling calibration matched to HPFP upgrades

• Raised torque and load limiters

• Enhanced throttle mapping

Gearbox (TCU):

• Custom Stage 2 TCU remap

• Increased clutch pressure for higher torque capacity

• Faster, more aggressive shift speeds

• Optimised shift points under load

• Raised torque limits to match engine output

• Enhanced launch control strategy

What it feels like

• Instant throttle response

• Massive mid-range torque

• Hard, aggressive acceleration

• Rapid, seamless gear changes

• No hesitation. No gaps in power

Everything works together as one system.

Daily driving

Refined at low throttle.Controlled in traffic.

Drive modes stay true to factory—just sharper when pushed.

Performance gains

• Significant horsepower and torque increase

• Faster acceleration through every gear

• Improved high-speed performance

• Consistent, repeatable output

(Results vary depending on setup and fuel quality)

Why Apex

• Complete airflow, fueling, and transmission solution

• ECU and TCU calibrated together for maximum efficiency

• Handles increased torque safely

• Delivers strong, reliable performance

• The ultimate Stage 2 setup before going Stage 3

More air. More fuel. Total control.Apex Stage 2 — where performance peaks before full build.