2011 Alpina BMW B5 Bi-Turbo

Geneva 2011: Novitec Rosso Supercharges the Ferrari 599 GTO to 888 Ponies

Ferrari's most exclusive and powerful series production model, the 599 GTO, doesn't seem fast enough for the aftermarket specialists at Novitec Rosso. This is why the tuning house brought to Geneva Motor Show the 599 GTO Bi-Kompressor, their own version of the Prancing Horse's fastest car.

As the name suggests, Novitec Rosso engineers fitted the naturally-aspirated V12 engine with two superchargers, raising the maximum output from 670 to 888 horsepower. The impressive increase in power can only be rivaled by that of the maximum torque, which goes up from 620 Nm/6,500 rpm (457 lb-ft) to 860 Nm/6,600 (636 lb-ft).

However, the boost in performance is not mind-blowing (compared to the regular model, that is) : the 0 to 100 km/h sprint is 0.15 seconds faster at 3,2 seconds, while top speed is slightly higher at 340 km/h (211 mph). The Novitec Rosso Bi-Kompressor also sprints from 0 to 200 km/h (124 mph) in a 9.1 seconds.

Other technical changes include the fitting of sports springs (however silly that may sound on a 599 GTO) and superlight forged wheels, which are among the lightest of their kind in the world, according to Novitec. The 21-inch front wheels are 22.9 lbs each (10 kg), while each of the rear 22-inch rims weighs 30.4 lbs (13.8 kg). A useful feature devised by Novitec for buyers who like to use their GTO's around town is the front-axle lift function that raises the front of the car by 40 mm to avoid hitting speed-bumps.

As for the exterior, the car shown in Geneva wears a special silver paint with yellow cross stripe on the bonnet and white patches on the doors, as a tribute to the Ferrari 250 GTO that won the Tour de France in 1964. Other changes include yellow brake calipers and blacked out taillights, third brake light, rear fog lamp and side markers.

Geneva 2011: Mansory's Ferrari 458 Italia-based Sicilian, the Siracusa

Mansory's products are always eye-catching (if not necessarily attractive), whether they be a clear coat carbon Aston Martin named Cyrus or that silly pink Bentley. Beauty, after all, is in the eye of the beholder. That being said, allow me to introduce you to the Siracusa. Rant and rave in the comments below.

Underneath all the new and revised carbon fiber body panels (now with more louvers!) is a Ferrari 458 Italia. Named after a Sicilian raceway, the Siracusa has received a respiratory performance boost to 590 horsepower / 434 kW and 560 Nm / 413 lb-ft representing gains of + 20 hp and + 20 Nm / 15 lb-ft over the standard model.

Thanks to the bump in power and drop in weight, Mansory claims the car will hit 100 km/h (62 mph) in 3.2 seconds and attain a top speed of 330 km/h (205 mph).

The Siracusa rides on 20- and 21-inch wheels (f/r) sheathed in Michelins, while inside is the same old tuner car song: carbon fiber, leather, and ultra-suede. Also, a new suspension setup lowers the car 20 mm. Next!

Geneva 2011: Carlsson C25 Royale is a Mercedes-Benz SL65 AMG in Disguise

Carlsson showed up at the Geneva Salon with a new version of its C25 supercar dubbed Royale. Based on the Mercedes-Benz SL 65 AMG, the heavily customized coupe with the fixed rooftop will be built in a limited run of 25 units. Company officials said six vehicles have already been sold and will be delivered to the customers in 2011. According to Carlsson, each C25 Royale takes six months from order to delivery.

Compared to the Mercedes SL65 AMG coupe-cabriolet, the C25 Royale is 180 kilograms lighter, thanks to the extensive use of carbon fiber, which is found on the hood and the fixed roof. This contributes to a lower center of gravity, in addition to the revision of the weight distribution, both aimed at offering improved handling.

Other weight-saving measures include the fitting of a full ceramic brake system, which is 50 percent lighter than on the SL 65 AMG. The German sports car also features a C-Tronic Suspension system developed by Carlsson, which detects road conditions and driving style and acts accordingly. For instance, on bad roads, the car is raised to offer better ride comfort.

At the heart of the C25 Royale is the biturbo V12-engine, tuned to deliver753 horsepower and 1,320 Nm of torque (973 lb-ft), which is electronically limited to 1,150 Nm (848 lb-ft). These impressive figures allow the C25 Royale to go from 0 to 100 km/h in 3,7 seconds and reach a top speed of 352 km/h (219 mph).

The custom exterior styling is matched to a bespoke interior with Carlsson offering buyers a variety of choices in features and materials.