There are a lot of other pictures, that will be interesting for Q4 owners only, and that's why I haven't published them in the Bulgarian forum I write, and here I don't see an attachment mod so I could upload them.

All the water and air hoses in the car are replaced with silicone ones, mainly from "Viper Performance".

The oil supply lines to the turbo were made here by a hydraulic "shop".

The thermostat has been thrown away. I don't like the place it is put, and will think later of an external solution in a more accessible place, for example the main water hose to the radiator.

Next steps, after I see everything with the engine is OK (hopefully) is 3" exhaust downpipe with a straight muffler, and then injectors and remap on a dyno. Later we will probably make a custom exhaust tubular manifold.

The fuel pump I have bought and haven't installed yet is a Bosch rated up to 520 hp

Bosch 040 pump is 235 litres per hour and supports 520 bhp at 73.5 PSI # 0 580 254 040