VF-Engineering chose to supercharge the BMW 523 to improve throttle response and mid-to-top end power with the centrifugal Vortech supercharger. With the 3.0 liter version being a bored and stroked upgrade of the 2.8 motor, both variations are otherwise virtually identical. Maintaining the the original BMW quality, smoothness, and reliability were the key factors in the VF design. This is where the VF software comes into full play. VF have harnessed reliability of Vortech superchargers and quality of VF custom software with their 10 years of supercharging experience and worldwide OEM supply contacts to create the ultimate supercharger system for the ultimate drivers car.
All key components are 100% made in California. This system has been fully road tested and dyno tuned on both the Mustang MD500AWD and in-house Dynojet 224XLC dynamometers with and without engine load. All kits are setup at 6 psi and create as much, if not more power than similar products running greater levels of boost.
VF engineers spent over 12 months software testing the BMW Bosch and Siemens ECUs and resolved stalling and MAF issues faced by other supercharger systems. Software flash technology and latest BMW file versions have all been employed to provide the cleanest and the most reliable method of software installation. VF engineers extensively re-wrote the ECU software using their own binary, assembly and disassembly algorithms written from scratch. Testing the software included extensive road and dyno test cycles, with acceleration and deceleration tests for driveability smoothness and ECU fuel management. All test cars were put through long term full throttle testing in conditions varying from wet cold climates to hot dry Arizona desert temperature for safe-optimal air fuel ratios and knock activity monitoring. Competently-written ECU software has allowed VF to fully explore the potential of the BMW engine, making over 40% more power in most applications.
VF chose to mount the Vortech supercharger with an in-house CNC machined aluminum bracket system. The unit is positioned in line with the original serpentine belt which is replaced with a longer OEM belt. The key to this design is that the OEM active-spring belt tensioner remains fully functional and eliminates belt slip or the need to manually tension the belt. The supercharger air ducts are custom molded in-house from plastic to give an OEM appearance, quality and fit. The incorporated Bosch boost overrun system is designed for smooth off-throttle cruising and deceleration with clean emissions. The crankcase ventilation system is designed to cope with positive pressure and high flow OEM injectors are supplied to fit as direct replacements without modification to the injector rail.
A removable plastic air box is provided with the K&N induction filter for those who use their vehicles in persistently wet climates.The VF supercharger system remains fully OBD2 compliant and is supported by a 1 year unlimited mileage warranty on the product only. Installation can be performed in approximately 8 hours and is non-intrusive, allowing it to be fully reversible.Specifications:
- 6.0 PSI
- + 116 Horsepower
- + 59 lb/ft torque
- GIAC custom tuned stage 1 software
- Vortech V2 Super Quite SC trim black supercharger
- CNC machined 6061 aluminum bracket system
- OEM BMW idler pullies
- OEM High flow fuel injectors
- Custom molded polypropylene ducting
- Bosch overrun bypass valve system
- Custom crank case ventilation system
- 4-ply silicon couplers with OEM screw clamps
- CNC oil fittings with high pressure OEM oil lines
- Replacement OEM serpentine belt
- K&N induction filter with cold air intake and optional air box
- Comprehensive installation CD-ROM
- 1 year unlimited mileage limited product warranty
Compatible with automatic transmission (please specify)
The VF-Engineering management and engineering team derive their experience of high performance supercharging since 1996 in the UK. Working on modern sports cars such as Audi, BMW, Lotus, Porsche and VW in joint and proprietary projects and partnerships with firms in the UK, Switzerland and USA has given VF the opportunity to market product in European, USA and world markets. VF obtains the latest information and has access to new model vehicles as they roll off the production lines in Germany through OEM connections, clients and manufacturers organizations.