special tools or modifications required.
8-10 Hours fitting time, fully reversible.
chose to supercharge the BMW to improve throttle response and mid-to-top end
power with the centrifugal Vortech supercharger. Maintaining the the original
BMW quality, smoothness and reliability were the key factors in the VF design.
This is where the GIAC software comes into full play. VF have harnessed reliability
of Vortech superchargers and quality of GIAC 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.
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.
GIAC 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. Competantly written ECU software has allowed
VF to fully explore the potential of the BMW engine making over 40% more power
in most applications.
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 3 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.
aspect of this kit has been fully engineered for high quality fitment and highly
demanding performance and expectation. VF's in-house horizontal, turning and
milling CNC's and plastic molding plant, GIAC's industry reputation and track
record and Vortech's reliability have been fully exploited to create a product
with internationally un-rivaled material technology, quality and performance.
1 is setup to create 6psi manifold pressure at peak boost. VF engineers tested
and found 6psi to be the optimal induction charge limit without aftercooling.
Looking at the dyno results, despite max torque gains of about 50 ftlbs, there
are peak torque gains of 70-80 ftlbs! The "delta" gains are more significant
than max power gains.