This Stage 1 ECU file delivers a responsive and torque-rich remap for the 2012 Opel Astra J 1.6 Turbo (180PS). Built from a full binary (software 55580166 / G10008), it improves throttle linearity, midrange acceleration, and boost ramp — while maintaining compatibility with all factory diagnostics and sensors. Ideal for sporty daily driving or light performance builds.