Mercedes-Benz SLS AMG by VÄTH

The tuning job begins with a power upgrade on the 6.3 liter unit that dials the noise from 571 PS (420 kW / 563 hp) up to 615 PS (452 kW / 607 bhp) and 680 Nm (501 lb-ft) of torque. That helps the SLS reach a top speed of 330 km/h (205 mph) and do the 0 to 100 km/h sprint in just 3.6 seconds.

VÄTH adds a high-performance exhaust that comes with a pneumatic valve system which allows the driver to manually control the exhaust sound from the cockpit that stretches between a throaty sporty sound to a more quiet rumble.

For the wheels, VÄTH adds its own 9.5J x 20-inch and 11.5J x 20-inch rims wrapped in 265/30ZR20 and 315/25ZR20 tires, front and back, respectively.

The VÄTH Comfort Suspension lowers the SLS AMG by 25 millimeters.

Visually, the German tuner has a refreshingly subtle, less-is-more take on the SLS AMG which includes an integrated front lip spoiler for more downforce on the front axle, as well as a boot lid spoiler with a trailing edge and side skirts with improved brake ducts.

For the inside, there's a leather sport steering wheel that can also be finsished with carbon or wood trims. A speedometer that reads up to 400 km/h is installed and black floor mats with VÄTH logos are added too. The tuner also offers door trimming in leather.

The complete package costs €32,670.

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Mercedes SLS AMG by MEC Design

MEC Design has released the first pictures of their new styling package for the Mercedes SLS AMG.

Built for a customer in Florida, the car has an aggressive body kit with new bumpers, revised side skirts, a trunk-mounted spoiler and a prominent rear diffuser. Other highlights include a stainless steel sport exhaust system, a hydraulic lift-up suspension and 20/21-inch alloy wheels.

Inside, designers added carbon fiber trim, an Alcantara sports steering wheel and special floor mats with the MEC logo.

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Infiniti FX 30dS tuned by AHG Sports

AHG Sports, the tuning division of Infiniti Zentrum Hamburg, has a kit that upgrades the Infiniti FX 30dS into a true Porsche Cayenne Diesel competitor.

For €1250, the tuner dials up power on the 3.0 liter V6 diesel unit to 280 PS (206 kW / 276 bhp) and 600 Nm of torque - up substantially from the standard 238 PS (175 kW / 235 bhp) and 550 Nm (406 lb-ft).

The tuner then adds a nice 21-inch wheel and tire combination. The 3-piece CC rims from Schmidt Revolution come in size 11 x 21-inch and are wrapped in 295/40R21 tires. Cost of the wheel set is €7,900.

Lowering springs also drop the suspension by 25 mm at a cost of €1,495, installation included.

Readmore → Infiniti FX 30dS tuned by AHG Sports

BMW M3 by Vorsteiner

Here's a new wide-body tuning kit for the not-so-new-anymore BMW E92 M3 by American tuner Vorsteiner.

The M3 gets dialed up to 620 bhp (462 kW / 629 PS) and is named the "Canday Cane" due to its red and white color scheme.

That power upgrade comes courtesy of the AA E9X M3 Supercharger Stage II kit as well as the titanium exhaust system supplied by Vorsteiner.

Carbon-fiber body panels fitted to the M3 here include the GTRS3 wide-body kit, a vented bonnet and boot lid.

Wheels are the 20-inch V-309 forged rims wrapped in Michelin PS2 Sport Tires - 285/25/20 and 325/25/20, front and back, respectively.

There's also a KW coil-over kit for the suspension and a Brembo GTR brake system.

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Porsche Panamera Stingray GTR by TOPCAR

TopCar has released the first details about their new styling package for the Porsche Panamera.

Dubbed the Stringray GTR, the body kit features new bumpers, widened fenders and modified doors. Additionally, there's a new hood, extended side skirts, an aggressive diffuser and a massive rear wing. The GTR kit was created to satisfy client's requests for more aggressive and "charismatic" styling compared to the original Stingray kit.

Besides the styling enhancements, customers can order a bespoke interior and two performance packages for the Panamera Turbo. The first option enables the twin-turbo 4.8-liter V8 to produce over 600 hp (447 kW / 453 hp) thanks to a new intake manifold, a high-flow air filter and a sports exhaust system. Turning things up a notch, there's also a 700 hp (522 kW / 710 PS) package which has more "sophisticated" modifications.

Regardless of the options, the styling package is priced from €45,000 ($63,500) and production will be limited to 25 units.

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BMW 6-Series Cabrio by Kelleners Sport

German tuner Kelleners Sport has a package for the BMW 6-Series Cabriolet that includes a power boost on the 650i model.

The tuner sees no need for an aero kit on the 6-Series Cabrio but starts things off with an engine tuning on the 650i that boosts power to an output of 490 PS (360 kW), up from the series 407 PS (300 kW). Torque also rises to a maximum 720 Nm (531 lb-ft), from the standard 600 Nm (442 lb-ft).

For the new wheels, Kelleners offers a variety of 19- and 20-inch wheel/tire combinations. Rims come in either Hamburg or Berlin design with tires in dimensions ranging from 245 to 285.

On the inside, the tuner adds aluminum foot supports, pedal pads and new velour floor mats along with options for a cabin finish in leather upholstery and wood trims.

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Porsche 911 (997) GT2 by Kubatech

German tuner Kubatech has a tuning kit that provides an update for the aging Porsche 997 GT2 model.

Although this tuning job takes place strictly under the hood it involves a complete revision of the 3.6 liter turbo unit.

The engine tuning kit includes modified turbochargers, performance charge air coolers, 200-cell sport catalysts from Cargraphic, new manifolds as well an an ECU remap. The so-called Stage 3/MC650 kit dials up power on the 3.6 liter turbo to 657 PS (483 kW / 648 bhp) and 835 Nm (616 lb-ft) of torque. A substantial upgrade from the series 530 PS (390 kW) and 680 Nm (501 lb-ft).

The job, says the tuner, takes six to eight working days to do and costs just under €23,000.

Readmore → Porsche 911 (997) GT2 by Kubatech