I recently supercharged my 330ci, runing an centrifugal supercharger (by AC Schnitzer) at 0.4 bar @6800rpm.
I run stock fuel system (stock ~250cc injectors).
The car was tuned on the dyno and made 270whp at 5500rpm, then it was running lean and the tuner couldn't push it further.
I have removed it from my car.
All the part are present.
Kit includes following
Rotrex C30 trim supercharger
8 psi boost level
CNC machined supercharger bracket with hardware
Front-mounted air-to-air intercooler
Self-contained oil system with front-mount oil cooler
6 higher flowing fuel...