The GT-R has set a Guinness World Record for fastest four seater car with a 0-60km/h sprint of 3.5 seconds.

Source: Carscoop

According to the World Record Academy, the Maxximus G-Force is the fastest street car on earth. It currently has three world records, 0-60mph in 2.134 seconds, 0-100mph in 4.541 seconds, and 0-100mph-0 in 8.861 seconds. The Maxximus G-Force is a modified British Ultima GTR which can be purchased as a turn-key car or as a kit to customize as the owner desires.

Currently the car runs a 7.0L Chevy V8 with twin turbochargers pushing the power to 1,600 horsepower. Kirby spent three and a half years re-engineering the Ultima chassis to fit the engine and necessary plumbing for turbos. Several blown clutches led the team away from a traditional manual transmission and instead to a three-speed sequential transmission. The Maxximus G-Force can do 80mph in first gear. Braking is done through six-piston AP Racing calipers and 14 inch cross-drilled discs. The car weights 2,700 pounds and will set back the owner $3 million dollars. It is reported the car has been sold to a buyer in the Middle East.

Source: Jalopnik and Motor Trend

Underground Racing has produced a twin turbo Lamborghini Gallardo producing 1300 horsepower. All this power has created the world’s fastest Gallardo.

I have listed the good parts of the video incase you want to go straight to the good stuff.
1:00 – Gallardo runs a 9.524 @ 167.63 mph
1:30 – Gallardo runs a 9.113 @ 169.00 mph
2:00 – Photo slideshow of the Gallardo and some of the other projects Underground Racing worked on. I could be wrong but both times the Gallardo seems to get a horrible launch.

Source: TMRtuned

2009 Subaru Impreza WRX STI built by Crawford Performance putting out 566 whp and 611 torque.

A previous video

Source: Jalopnik

Hennessey has released videos of their GTR700 doing some drag and a 0-300kmh pull. The GTR700 has about 715 horsepower and 662 lb-ft torque all due to upgraded turbos and reprogrammed ECU. It can do a 0-60 in 2.8 seconds and the quarter mile in 10.87.

Source: Autoblog via Over-Boost

Porsche’s answer to growing CO2 restrictions might be supercharged four cylinder engines. Porsche’s Klaus Bening made such a statement to AutoCar that the next generation Boxster and Cayman might have such a engine in them around 2012. With Porsche’s history with turbocharging, it must be either cheaper to supercharge those engines or they expect customers to prefer the powerband of such a setup.

Source: AutoCar via TopSpeed

Jalopnik posted a question which is the best turbocharged engine? The author suggested BMW’s N54 twin-turbo 3.0-liter straight-six. Head over and let your opinion ring out!

Denmark supercar builders Zenvo Automotive have released the first video of their ST1. The ST1 has a turbocharged 7.0L V8 producing 1104 horsepower. Zenvo says the ST1 should be able to do 0-60 in 3 seconds and a top speed of 233 mph.

Source: Global Motors

Great videos.

Source: Speedhunters

Twins Turbo is working on their next creation a twin turbo Viper. The Viper will hope to create 2,000 horsepower. To handle this kind of power Twins Turbo is having to strengthen the chassis a great deal. It seems this car is destined to do some racing laps. I can not wait to see how this turns out. No doubt this will be one of the most unique Vipers around.

Source: Speedhunters