Nevertheless, famed BMW tuner G-Power thinks something’s missing, namely “the ultimate output”. That’s why the Autenzell-based specialist will modify three GTS models, two of which have already arrived at its headquarters in Germany.
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While based on the outgoing BMW M6 Coupé, the Hurricane RR Coupe adopts the V10 bi-supercharger engine from G-Power's M5 Hurricane RR, which delivers 800-horsepower between 7,500 and 8,000 rpm, and a maximum torque of 800 Nm (or 590 lb-ft) generated at 5,000 rpm.
Both the Tornado CS and GT2 S - the Tornado is the more subdued of the two - get G-Power's SK II CS supercharger system, lightened wheels, and a "Clubsport" coilover system.
Both cars crank out 600 horsepower and 580 Nm of torque, resulting in a theoretical top speed of over 320 km/h with a six-speed (330 km/h with the 7-speed DCT).
Simply called the Storm, G-Power's latest achievement will be produced in a limited run of just 10 units worldwide and it promises to bring the rain on other tuning proposals like the 500HP Alpina B7.
Starting with the engine, G-Power's technicians fiddled around with the 6.0-liter V12 bi-turbochargers increasing maximum boost pressure from 0.5 bar to 0.9 bar. They also recalibrated the ECU, added larger injection valves and created an entirely new exhaust system.
The German tuner has upgraded the 4.4-liter V8 turbocharged engine found in both M models with a reprogrammed ECU resulting in a modest boost in output to 600 horsepower at 6,000 rpm and 700Nm or 516 pound-feet of torque from 2,000 rpm.
Along with the removal of the speed limiter, the two modified SUVs / SAVs / Crossovers (make your pick) are now propelled to a top speed in excess of 300km/h (187mph), with 0 to 100km/h (62mph) acceleration coming in 4.5 seconds and to 200km/h (124mph) in just 16.2 seconds.
There's also a new suspension kit that lower's the ride height of both models by around 30mm.
G-Power was never about subtle aero mods, and the company makes no exception with the X5 M and X6 M. Both models feature a different front bumper with extra large air-inlets on each corner along with a new bonnet made of Kevlar hybrid or full carbon and side skirts.
The rear is marked by a new apron, a diffuser that houses the stainless steel exhaust pipes, a roof spoiler, and in the case of the X6 M, a boot wing also.
G-Power has designed two separate sets of 23-inch alloy wheels that are shod in 315/25 ZR23 high-performance Michelin tires for the X5 M and X6 M.
The company also enhances the interior of the two M models with numerous parts such as a new sports steering wheel, a speedometer in G-POWER design and carbon-fiber covers for the side linings, central console and the dashboard.
G-Power said that €6,990 (plus assembly) will buy you the aero kit, €8,865.55 the new alloy wheels and tires, €3,021 the full stainless steel end muffler and €4,701.68 V8 engine power upgrade.
This time, BMW 'super tuner' G-Power has turned its attention on two previous generation 'M' sports cars, the M3 E46 and the Z4M with the presentation of a somewhat tamer performance package than what we're used to from the German company. At the heart of the tuning program is a new large ASA TM I 20 centrifugal supercharger that boosts the M3 and Z4M 3.2-liter straight-six engine's output from 343HP and 365Nm to 450HP and 450Nm or 331.9 lb-ft of torque. T
he 107 horsepower boost helps improve acceleration from standstill to 200km/h or 124mph from the standard M3 E46 Coupe's 18,1 seconds to 14,7 seconds, making it even faster than the current 420HP-strong M3 V8 that needs 15.8 seconds for the same sprint.
To improve road handling, the performance package for both the M3 E46 and Z4M include a continuously height-adjustable G-Power coil-over suspension RS with nine selectable settings each for bound and rebound.
The M division sports cars ride on lightweight 20-inch alloy wheels shod in Michelin Pilot Sport tires (245/30 ZR 20 at the front and 285/25 ZR 20 at the back) that allow a top speed of more than 300km/h or 187mph.
Though not included in the basic package, G-Power also offers a sports rear muffler that produces a deeper and more sonorous tone.
The Germans at G-Power have released their first take on the second generation BMW Z4 E89 hardtop-roadster. The tuning firm's performance package for the new Z4 includes a power kit for the sDrive 35i's 3.0-liter twin-turbocharged inline six engine along with suspension and wheel/tire upgrades. We suspect that it won't be long before G-Power unleashes a 400HP+ beast based on the Z4 but until then, let's see in detail what the company has prepared for the German roadster starting off with the engine kit. The Z4 sDrive 35i's twin-turbocharged inline six benefits from the BI-TRONIK performance module that that pushes the factory engine's output from a standard 306HP and 400Nm (295-lbs/ft) of torque to a more satisfying 345HP and 480Nm (354-lbs/ft) of torque. G-Power claims that with this kit, the 345HP Z4 Roadster can accelerate from 0 to 100km/h (62mph) in 4.7 seconds, or half a second faster than the factory model.
G-Power's offerings also include a new coil-over suspension and a more sonorous stainless steel sport rear muffler with four tail pipes. While the tuning firm has not released any type of aero parts (yet), Z4 owners can equip their car with a new set of 20-inch lightweight alloy wheels wrapped in Michelin Pilot Sport rubber (255/30 ZR 20 up front and 295/25 ZR 20 at the rear).
And now for the prices. The cost for the 20 inch alloy wheels along with the Michelin tires is €4,474 while the coil-over suspension is €1,256 and the rear muffler, €1,508. As for the engine kit, prices have been set at €1,978 but unless you know your way around the engine bay, you'll have to pay another €403 to get it installed.
Even the most recent BMW M3 with its 420HP V8 engine can't escape from the tuning claws of G-Power. However, if you've been following the latest news from the German tuning firm, you will probably be surprised with the somewhat modest upgrades that G-Power has incorporated into the M3 Coupe Tornado. The most significant change concerns the addition of tailor-made 'light' supercharger from ASA with a moderate 0,3 bar boost. Along with a new intercooler and a performance exhaust system, the 4.0-liter V8's output increases from 420HP and 400Nm to 500HP and 480Nm (354-lbs/ft). 
G-Power says that the supercharged M3 Coupe with the 6-speed manual gearbox can accelerate from standstill to 200km/h (124mph) in just 13.5 seconds compared to the standard M3's time of 15.8 seconds. Customers can opt for the removal of the electronic speed limiter, in which case the M3 Coupe Tornado can reach a top speed in excess of 320km/h or +199mph..
The M3 Coupe Tornado also comes with a height-adjustable coil-over suspension with nine selectable settings each for bound and rebound while the car rides on Michelin Pilot Sport tires -255/30 ZR20 in front, 295/25 ZR20 in the rear- mounted on lightweight 20-inch Silverstone alloy wheels. The kit is complemented by a new four-pipe muffler made from stainless steel or optionally, from titanium which is 14,5kg or 32-lbs lighter than the factory part.
Unlike other G-Power models like the M6 Hurricane CS and the X5 Typhoon, the M3 Coupe Tornado does not feature any exterior upgrades other than the rims. The German firm does however update the interior with carbon-fiber trim, a new speedometer with the G-Power logo, an aluminum pedal set and optionally, a special leather treatment.
For BMW tuning aficionado G-Power, there's no such thing as enough power or too much speed. Having already pushed the limits on the M5 Sedan and more recently, the X5 SUV, the German tuner focused its resources on the development of an even more extreme and powerful edition of the 635HP M6 Hurricane. Called the Hurricane CS, the M6 Coupe-based model uses an upgraded version of the M5 Hurricane's 730HP twin-turbocharged V10 that delivers an output of 750HP allowing the supercar to reach a top speed of 370km/h or 231mph.
To achieve the record breaking speed (for a production BMW coupe), Michelin provided a set of special high performance Pilot Sport PS2 in sizes 255/35 ZR 19 in front and 305/30 ZR 19 on the rear axle. For everyday use, G-Power offers the M6 with 21-inch Silverstone Diamond wheels shod in 255/30 ZR 21 (front) and 295/25 ZR 21 (rear) tires that are for use up to 340 km/h or 211mph.
Further development of the M5 Hurricane's V10 engine that included optimized mapping of the ECU and redesigned superchargers contributed to the increased power output of 750 horsepower available between 7,500 and 8,000 rpm, and the peak torque of 800Nm or 590 lb-ft at 5,000 rpm.
At the same time G-POWER put the BMW M6 on a diet by replacing the entire exhaust system with one made from titanium that allegedly weighs 24 kg or 53lbs less than the factory exhaust while the new carbon fiber seats in the interior, save another 24kg (12kg or 26.5 lbs each seat).
The 750Hp V10 and the weight saving measures help the Hurricane CS sprint from zero to 100km/h or 62mph in 4.4 seconds, to 200km/h or 124mph in 9.6 seconds and to 300 km/h or 187mph in just 26 seconds.
Stopping power is provided by a Carbon-Ceramic break system with 6-piston calibres and brake discs with 380 mm in diameter, that is 50% lighter than the standard brakes. There's also a height-adjustable G-POWER coil-over RS suspension with nine selectable settings each for bound and rebound and the G-POWER anit-roll-bar kit for the front and rear axles.
Other modifications on the G-Power M6 Hurricane CS include the multipart widebody aero kit that consists of new fenders, restyled bumpers, hood vents, carbon fiber spoilers and rear diffuser.
In the cabin, aside from the carbon-fiber sports seats, the Hurricane CS also gets a new speedometer with 400-km/h scale, clear-coated carbon-fiber panels for the dash, center console and doors, as well as a new sport steering wheel dressed in perforated Kjerba Nappa leather.
And the price for all of this? According to G-Power, a fully converted Hurricane CS starts at €360,000 or the equivalent of US$477,500.
