Audi RS3 8Y / TTRS DAZA ECU Tuning Guide The Audi RS3 8Y and TTRS are powered by the legendary EA855 EVO — codenamed DAZA — a 2.5-litre turbocharged inline-five engine that produces 401 HP and 369 lb-ft of torque in stock form. This engine is widely regarded as one of the most tuneable powerplants in the modern Audi lineup, capable of delivering supercar-rivalling performance with the right ECU calibration and supporting modifications. In this comprehensive guide, YPG Motorsport breaks down every tuning stage, the hardware you need, and what to expect from your RS3 or TTRS build — whether...