The VF-Engineering M3 supercharger for the BMW E46 S54 engine is a fully upgrade-able water cooled supercharger system. Designed to provide the most consistent charge with the cooled water circulating through it from a custom molded water reservoir, an OEM front mount radiator and water pump. The optional “Race” version water radiator is offered for track and aggressive drivers.

The high displacement bypass valve recirculates air charge off throttle to minimize manifold pressure instantly. The bypass valve is one of the largest available valves in that frame. Mounted on a universal flange, the VF valve can be replaced with an optional “Tial” blow off valve for superb sound effects. 

The fuel injectors are upgraded with high capacity Bosch EV model high-impedance rapid response fuel injectors that were carefully chosen and tested for exacting response time and ultra-precise spray pattern. These injectors match the OEM fuel pattern and provide optimal combustion and superior fuel efficiency but with significantly greater horsepower potential.

Featuring nearly twice the flow rate, these injectors are calibrated with proprietary software flashed into the ECU through the OBD2 port. The flashing can be easily performed by the installer with a programming cable and a software file emailed to you. Each power level is tuned with a specific custom-calibrated software version.
This meticulous choice of fuel injector and software integration is one of the key components in the VF supercharger system. Combined with efficiently written ECU supercharger code, the precise fuel atomization of this Bosch EV14 high flow injector allows critical fuel trimming to match the ECUs processor requests.
Ultimately it’s just one of several reasons why VF Engineering has been the gold-standard in supercharger systems for more than a decade.