Longtime Mercedes-Benz tuner has released a performance package for the latest S500 and CL500 as well as the S63 and CL63 AMG models, which are fitted with Stuttgart?s new V8 bi-turbocharged engines. In addition to the powerplant enhancements, the German tuning firm has also developed a range of cosmetic and handling upgrades.

Starting with the S500 and CL500 models, Brabus offers two different engine tunes for the 4.7-liter twin-turbocharged V8. The first kit includes a new ECU priced at ?4,900 (~US$7,160), which bumps output from 435HP and 700Nm to 482HP and 780 Nm (575 lb-ft).[...]

Created by Fox Marketing, the bespoke CT200h features a wide body kit and a supercharged 1.8-liter engine.[...]

Designed to be a road car with motorsport intentions, the RMS Spyder features a 5.2-liter V10 engine with 600 PS (441 kW / 591 hp) and 585 Nm (431 lb-ft) of torque.[...]

German racing tuner adds more power, 22-inch wheels and lowers the suspension on the all-wheel drive Panamera 4S.[...]

The Porsche Panamera continues to draw attention from Europe?s aftermarket tuners, only this time, Schmidt Revolution?s proposal for the sports saloon is far more subtle than what we?re used to.

The German tuner starts with a standard Panamera 4S, which leaves Porsche?s factory with a 4.8-liter V8 engine churning out 400-horses and 500Nm of peak torque. The performance modifications, courtesy of Rennsport, include a software optimization (?990 or about US$1,443) that increase output to 425HP and 535Nm, along with a suspension module (?390 or around US$568) that lower?s the ride height by 40mm and sport exhaust system (?590 or about US$860).

Inspired by a scene from the upcoming Fast Five film or as some fans refer to it, Fast and Furious 5, in which the protagonists try out different cars to find the right one for a risky heist, the folks over from Autotopia set out to test numerous tuned cars on a race track to see which one is best suited for the task.

The cars they chose for the test include the AE Performance Nissan 370Z used in the movie Fast Five; Autotopias? Ford Cargo Van; DC Motors Mercedes Benz CLK63 AMG Black Series; Gintani BMW X5M; Heintz Ford Mustang GT 5.0; MFEST E60 BMW M5; OE Tuning Mercedes Benz C63 AMG; Airtiger Express Nissan GTR R35; Tesla Motors Roadster Sport and finally, the Team Wu Dodge Charger Police Car.

The Swiss tuner from Hunzenschwil has developed a widebody kit for the Mercedes SLS AMG called the Gullstream.[...]

After releasing their styling program for the Toyota 200 Land Cruiser, Wald was swamped with requests to do the same for the LX570.[...]

Project Kahn is jumping the shark on the royal wedding bandwagon with a special tune to celebrate Prince William and Kate Middleton's big day on April 29. Traditionally, royal weddings have been marked by commemorative stamps, coins and memorabilia, but times have changed and the British aftermarket specialist?s tribute is a subtly modified Maybach 57 limousine.[...]

In its third consecutive take on the Mercedes-Benz SLS AMG, German tuner Kicherer has released a new package with performance and styling modifications for Stuttgart?s supercar, and just to capture our attention, the company threw a beautiful female model into the picture (not included in the package).[...]