^ this
http://www.accusump.com/accusump.pdf/instructions.pdf
It's also called the poor man's dry sump system. It serves two purposes, pressurizes the system on start up and also maintain pressure for a short period of time when the car loses pressure (due to bad pickup).
One of my favorite tracks but one that also destroys porsches
Accusump install-need an oil filter sandwich adapter - Rennlist Discussion Forums
Why porsche would have made for a better out of the box track car
https://www.youtube.com/watch?v=fv53RbvgfGc