This Audi A5 TDI came into Revhigh for a Stage 2 performance upgrade, with a combination of hardware upgrades and custom ECU and TCU dyno tuning. The goal was to improve the vehicle's overall performance by increasing power and torque while optimising both the engine and transmission calibration to work with the upgraded hardware. 🔧 Stage 2 Setup The Audi A5 TDI received: ECU Dyno Tune TCU Dyno Tune Cold Air Intake Downpipe The combination of increased airflow, improved exha