This actuator is compatable with the VAG 1.4 Twincharged engines found in the Audi A1, Seat Mk5 Ibiza / Bocenegra, Skoda Fabia and Volkswagen Polo.
This product is built with a predetermined actuator spring suitable for at, or slightly above factory boost levels. The actuator can be assembled with a stiffer spring upon request. It is designed and built with the intention of increasing the boost output of a turbocharged system. We cannot guarantee compatibility with all applications, nor the ability to increase the boost output beyond a level that is within the parameters set by the engine-management-system of the given vehicle at the time of installation, whether that system is factory or aftermarket.