Audi 3.0T Supercharged Custom Tuning — Simos 8.4/8.5

Audi 3.0T Supercharged Custom Tuning

Custom ECU calibration for supported supercharged Audi 3.0T applications, built around pulley ratio, cooling, fuel, transmission, and vehicle condition.

Supported applications

Common B8/B8.5 S4 and S5, C7 A6/A7, Q5/SQ5, A8 and related 3.0T applications using supported Simos controllers.

Supported control units and access

Continental Simos 8.4 and Simos 8.5 are the primary supported ECU families. HexProg II and HP Tuners publish read/write coverage, while StageX lists Stage 1, DTC, and detailed mappack support for Simos 8.5. Exact ECU/TCU identification, software version, and read/write method are confirmed after purchase. Some vehicles can be flashed through OBD; others may require bench or boot access.

Choose the service level

• Calibration Level: Select the option that matches the installed hardware. Stage names describe service scope, not a guaranteed power figure.
• Drivetrain Service: Engine-only or engine plus a supported transmission calibration.
• DTC Review: Choose no DTC changes or a review of supported non-emissions diagnostic codes. This option does not include disabling required emissions or safety systems on street vehicles.

Included service

• Build, fuel, hardware, and stock-file review
• One confirmed hardware configuration and one primary fuel setup
• Scheduled remote connection or file workflow, datalog review, calibration changes, and revisions inside the purchased block
• Fuel, ignition, airflow/load, torque, boost, throttle, drivability, and supported transmission strategies as applicable

Included time: Stage 1 — up to 3 hours. Single Pulley / Stage 2 — up to 4 hours. Dual Pulley — up to 5 hours. Time includes setup review, connecting, logging, calibration work, revisions, troubleshooting, and communication.

After purchase and scheduling

Our team will email the address used at checkout to confirm the vehicle, ECU/TCU, hardware, fuel, tuning goals, required files, and an available appointment time. Text or phone follow-up may be used when needed. Sessions are scheduled in Eastern Time.

Before the appointment

The vehicle must be mechanically complete, leak-free, fueled correctly, and ready to produce repeatable logs. A compatible interface, cable, software license, ECU/TCU unlock, bench service, and dyno rental are separate unless specifically stated.

Time and revision policy

This is a scheduled professional service, not an open-ended support window. Mechanical faults, communication problems, incomplete hardware, or incorrect fuel can consume the purchased time. Work beyond the included block must be purchased as Additional Calibration Time and scheduled before tuning continues. Major hardware or fuel changes may require additional time or a new calibration.

Specific power is not guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits. Customers are responsible for legal and emissions compliance.