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Old 9th-January-2008, 04:07 PM
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G-Power Hurricane M5 claims mantle as fastest BMW with 730HP











Coaxing more power from an engine as finely-tuned as BMW M-division's 500-horsepower V10 is no easy task. But that didn't stop German aftermarket tuner G-Power, which managed to get total power output up to a staggering 730 hp for its Hurricane M5, claiming the hotly-contested mantle of the world's fastest and most powerful street-legal Bimmer.

To extract that kind of juice, G-Power fitted not one, but two superchargers ĘC one for each cylinder bank ĘC with stratospheric spooling redlines of 100,000 rpm. They've also fitted an overhead intercooler, swapped in a bigger oil cooler and tinkered with the M5's notoriously intricate electronics. The result: half a second off the M5's already supercar-like 0-60 time, now down to just 4.2 seconds. With all that extra power and the electronic limiter removed, the aptly-named Hurricane is claimed to hit a top speed of 340 km/h ĘC that's over 211 miles per Autobahn-storming hour.

To deal with all that power and those high speeds, G-Power has paid due attention to the aerodynamics, suspension, brakes and rolling stock. They've fitted a new front end with bigger ducts and new rocker panels as well as a trunk-mounted lip spoiler and carbon fiber diffuser to keep the car glued to the tarmac, gripped by ultra-low-profile Dunlop rubber on 21-inch alloys. Six-piston calipers grip the 400-milimeter front brake discs, in front of the fully-adjustable suspension.

To achieve the desired increase in power output of 223 hp / 164 kW for the fast-revving engine that normally produces 507 hp / 373 kW, G-POWER, in cooperation with ASA Automotive, has developed a high-tech supercharging system. The system uses one belt-driven ASA T1-12 compressor for each cylinder bank. Contrary to conventional mechanical chargers that waste a large portion of the additional power on being driven themselves, the ASA compressor has an efficiency rate of up to 80 percent. The ASA charger is also small, which allows G-POWER to install two of them in the tight confines of the M5 engine bay. With a maximum airstream volume of up to 1,200 kg per hour per cylinder bank the compressors are designed for an even higher power output. Boost pressure is limited to 0.5 bars.

The pre-compressed charge air is cooled down in a highly efficient dual-flow water-to-air intercooler system that is mounted above the engine. This measure optimizes power yield and, in combination with a larger water-cooled oil cooler with pressure reservoir, also ensures the engine's thermal health. Specially developed mapping for engine electronics and SMG gearbox controls coordinate the perfect interaction of all new components.

The inner workings of the four-valve ten-cylinder engine are optimized for even higher engine speeds with lightweight, precision-matched high-performance forged pistons from technology partner MAHLE. The supercharged V10 engine produces its maximum power output of 730 hp / 537 kW between 7,500 and 8,200 rpm. The high efficiency rate of the two superchargers, each spinning at up to 100,000 rpm and more, results in a torque diagram that rises early and at 3,800 rpm already surpasses the production engine's peak torque of 520 Nm, delivered at 6,000 rpm. The new peak of 700 Nm is reached at 7,200 rpm.

Acceleration performance benefits accordingly. With a sprint time from rest to 100 km/h of 4.2 seconds the two-ton sedan bests its production counterpart by half a second. With approx. ten seconds to 200 km/h the advantage grows to 5.0 seconds. The 300-km/h barrier is shattered in less than 29.5 seconds. Contrary to the production car the G-POWER HURRICANE is not limited electronically to a top speed of 250 km/h. Aided by the specially cooled G-POWER anti-slip differential the engine propels the car to a top speed of 340 km/h.

The enormous performance places extreme demands on aerodynamics, tires, suspension and brakes.

The G-POWER front apron, upon request also available made from especially light carbon fiber, replaces the production part in its entirety. Its large air inlets provide optimal supply of cooling air for all radiators and front brakes. At the same time the spoiler minimizes lift on the front axle at high speeds.
The G-POWER rocker panels smooth the airflow between the wheel houses and give the M5 and longer, lower and sleeker appearance. Lift on the rear axle is reduced by a spoiler lip attached to the trunk lid and the carbon-fiber rear diffuser for the G-POWER rear apron.

Even better driving dynamics and more exclusive looks are the hallmark of the G-POWER Silverstone 21-inch light-alloy wheels that fill out the space beneath the wheel arches perfectly. The drop-center rims have brilliant-graphite coated centers while the outer rim wells and spokes are polished. They are mounted in sizes 9.5 J x 21 with size 255/30 ZR 21 tires in front and size 10.5 J x 21 wheels with size 295/25 ZR 21 tires on the rear axle. Technology partner Dunlop provides the perfect high-speed tires.

The large wheels make room for the G-POWER high-performance brake system with six-piston fixed calipers and 400 x 36 millimeter brake discs on the front axle. G-POWER also offers an upgrade package for the standard M5 brakes that consists of high-performance pads and brake fluid.

The M5 handling can be made even sportier by installing the height-adjustable G-POWER coil-over suspension RS with nine selectable settings each for bound and rebound.The G-POWER HURRICANE is available as a fully converted car starting at 240,000 Euros.

Wow,if this model comes to Singapore nobody would buy their Z-class already...LOLS...
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