If u have a series one, u should only run a series one ecu, blue red blue. the series one doesent have a knock sensor, and the blue red blue doesent run one either, the series two does run them, and there a pain in the arse, they break down, the knock senser plays up, u carnt disconect it cos then it retards the ignition. my series two had problems karl norris called it the fucked rsturbo syndrome, but he told me to put a series one blue red blue, and now its sound. blue red blue is the way to go son,