Page updated 11-Sep-2009
10-14 Hours fitting time, fully reversible.
VF-Engineering chose to supercharge
the all-new BMW 645 to increase throttle response and mid-to-top
end power with the centrifugal Vortech supercharger. With the stock 4.4 liter
motor, power and torque are already substantial. However this upgrade
is for the V8 enthusiast who demands more than substantial power. The new found power makes
the 645 more powerful than a stock E64 M5 and a potential contender to the new E60 M5 V10.
As a daily driver the supercharged 645 SMG is a mild mannered beast waiting
for the throttle body to opened wide. It is easy to slide the back end
out under full throttle and launch the V8 to speeds way above the
limit in a split second. Good brakes and self control are suggested pre-requisites.
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.
All key components are 100%
made in California. This system has been fully road tested and
dyno tuned on both the GIAC 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.
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VF engineers spent over 12 months
software testing the BMW Bosch and Siemens ECUs. 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. 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 a bolt-on crank pulley with an additional
active OEM tensioner using a dedicated serpentine belt. The key to
reliable superchargers sytems is the the active belt tensioner which
eliminates belt slip. 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.
VF aftercooled the 645 by integrating a chargecooler into a cast
aluminum intake manifold included with the kit to replace
the original manifold. This design approach reduces the length of
pipework by about 75% required for a remote mounted chargecooler
core or air/air intercooler. The simple and compact design make this
kit integrate neatly into the V8's engine bay.
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 10-14 hours and is non-intrusive, allowing it to be fully
reversible.
Right: The SLA 3D model of the VF replacement intake manifold is shown mounted in the 545/550 engine bay. The manifold contains an integrated water-intercooler for optimal after cooling. Left: The manifold is flow tested on VF's Superflow 1020 flow bench.
Every 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.
Not all vehicles respond identically to
engine modifications, which is why it is important to consider
the "delta", or relative power, increase measured on the same dyno
before and after modification. Power gains shown by VF have been
found to be accurate on test vehicles on 91 octane at sea level,
with stock setups (i.e. throttle body, exhaust system, etc.). The GIAC software
adapts just as the OEM software and a slight increase in performance may
be expected from the use of higher quality fuels such as 93 octane.
Power gains may vary according to factors such as altitude or vehicle
condition.
This product is not compliant by California state emission law and not rebuilt for use on public roads in California.
Bolt
on 6.0 psi VF-Engineering supercharger with charge cooler manifold
system. (currently undergoing road testing phase)
FAQs
(Coming Soon) 
