By the addition of a space-efficient, centrifugal Rotrex supercharger, running its own oil feed system and additional oil cooler independent from the engine. The installation includes an all aluminium new inlet manifold.Choosing to adopt the Rotrex supercharger is the result of six and a half years of durability and reliability testing of the unit in a wide range of Autodelta Alfa Romeo models. In order to match fuelling and ignition timing, the factory ECU has been remapped, and the installation has in-built safety features to control boost levels. Installation only at Autodelta London and selected Worldwide Autodelta outlets. Power output 220 bhp.