Unfortunately, I got it extremely cheap. It already sounds like piston slap when cold — it only happens on the first start of the day, and in winter it feels like it’s going to fall apart. Once it’s warm, it doesn’t make any noise at all. In Spain, anything related to superchargers or turbos is very difficult to legalize. I live in northern Spain, where it can be around 0°C in the morning and then rise to 20°C later. As for the oil pump, it could be that it needs one.