twin-turbo

U.K.-market Audi BiTDI engine adds extra turbo, oddly placed speaker

Pop quiz, tough guy: How do you make VW/Audi's direct-injected, turbodiesel engines better? If you answered "add another turbo," then congratulations. You're now ready to work for Audi's R&D department!

Okay, so I'm sure that Audi's engineers are a bit more qualified than that, but "adding another turbo" is exactly what they did with the advent of the new BiTDI 3.0 V-6 engine. The new engine, which will find its way under the hood of diesel-powered A6 and A7 Sportback models in the U.K. market, features … Read more

Hennessey building 12 1000 horsepower CTS-V Coupes

If you've been eyeing a Cadillac CTS-V Coupe but feel like 556 horsepower just isn't going to cut it, perhaps Hennessey Performance's limited-edition Caddies are more your speed. The performance turning house plans to produce a dozen 1000 horsepower Twin Turbo CTS-V Coupes next year that have been customized inside and out.

The performance-tuning house has been offering 1000 horsepower Cadillacs for a while, but setting the limited-edition CTS-V apart from other souped-up Caddies is its modified body and custom interior. Like the V1000 upgrade offered on all CTS flavors, the sports coupe will be outfitted with … Read more

Hennessey Cadillac CTS-V Wagon vs. Porsche 911 Twin Turbo (video)

Not exactly "The Tortoise and the Hare": This Web video shows a Cadillac CTS-V Wagon in a drag race with a Porsche 911 Twin Turbo

The CTS-V Wagon has been given a 650-horsepower Hennessey V650 upgrade and drag radial tires.

The upgrade includes a supercharger pulley and snout upgrade, stainless-steel long tube headers and midpipes, and a high-flow catalytic converter.

The Hennessey wagon offers 658 brake horsepower (bhp) at 6,200 rpm. And despite weighing almost 1,000 pounds more than the 911, the CTS-V Wagon bests the 480-horsepower Porsche.

Check it out for yourself.