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Audi EA855 2.5T I5 Engine Guide — RS3 8Y, TTRS 8S | Tuning Stages & Build Paths | YPG Motorsport
Audi EA855 2.5T Inline-5 Engine Guide — RS3 8Y & TTRS 8S The EA855 EVO 2.5-liter turbocharged inline-five is one of the most celebrated performance engines in Audi's modern lineup. Powering the RS3 8Y and TT RS 8S, this engine delivers 400 HP from the factory and carries a legacy that stretches back to the original Audi Quattro rally cars. For tuners, it represents one of the most responsive and rewarding platforms in the VAG portfolio — capable of reaching 600+ HP with the right modifications. This guide covers everything you need to know about the EA855 EVO architecture, tuning...