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Electric turbos promise big performance and efficiency gains in the near future

An electric turbo system boosts efficiency between 15 and 20 percent, according to Audi.
Turbochargers, like acoustic guitars, use moving air to create magic. And electric turbochargers, like electric guitars, provide the ability to amp up that magic to amazing new levels.

New info on how VW, Porsche, Audi V6 TDI engine cheat works

The German newspaper Bild am Sonntag is reporting that US investigators have found three pieces of software that work in concert to turn off the emissions control equipment in certain diesel models after a set period of time. The engine in question, the 3.0-liter TDI turbodiesel, was found in certain Volkswagen Touareg, Audi Q7, and Porsche Cayenne models – the sale of which was suspended in the US late last year. Since most emissions compliance testing takes around 20 minutes, the software in the three VW Group models shuts off the emissions control equipment after 22 minutes, a straightforward end run around the testing. Remember that the 3.0-liter TDI engines aren't included in the big buyback and recall program announced for the smaller 2.0-liter, four-cylinder TDI engines. The 3.0-liter engines will likely get their own program, but we don't know when to expect it or exactly what it will look like. Last month, California rejected a proposed fix for the larger TDI engines, and VW went back to the drawing board. Since the company is unlikely to create two fixes, one for California and one for the rest of the nation, the company can't really proceed until they figure out a solution California will accept. The EPA hasn't officially commented on the report, and we don't know how Bild am Sonntag came across the information, but we'll be closely watching what emerges after this report. Related Video:

Audi SQ5 TDI Plus packs more potent punch

While the SQ5 that Audi offers in North America packs a supercharged 3.0-liter V6 burning gasoline, the version it sells back home is fueled by diesel. And now, with the Frankfurt Motor Show fast approaching, Ingolstadt is rolling out an even more potent version. The new Audi SQ5 TDI Plus upgrades on the existing version with 27 more horsepower and nearly 37 pound-feet more torque. The six-cylinder twin-turbo diesel engine now cranks out 340 hp and a mountainous 516 lb-ft. That's over a hundred torques more than even the V10 Plus version of the new R8. Burning that midnight oil will rocket the SQ5 TDI Plus to 62 from a standstill in 5.1 seconds and on to an electronically limited top speed of 155 miles per hour. All the while it will return the equivalent of 35.6 miles per gallon of diesel fuel. Compared to the gasoline version offered Stateside, the TDI Plus now produces nearly as much power but way more torque. Performance figures are now nearly identical, but the TDI Plus uses less of the (typically) cheaper fuel. The upgraded package also includes 21-inch five-spoke alloys, additional gloss black accents, restyling tailpipes, and revised interior trim. The launch of the SQ5 TDI Plus follows that of the S8 Plus performance sedan, which our sources tell us is likely – but as yet unconfirmed – to be offered in the United States. <p>Your browser does not support iframes.</p> Even more power and top-of-the-line equipment: The Audi SQ5 TDI plus with 250 kW (340 hp) - The SQ5 TDI plus will launch on the German market in October 2015 - 700 Nm of torque; from 0 to 100 km/h in 5.1 seconds - On request, exclusive equipment package from quattro GmbH Audi is further expanding its range of S models. In October, the new SQ5 TDI plus* will arrive at German dealerships with more power and driving pleasure and even more extensive equipment – with 250 kW (340 hp), sport differential and 21-inch wheels. Even in its basic version, the successful Audi SQ5 TDI* comes as an SUV with the performance of a sports car. The plus version has an even higher power output. The biturbo V6 TDI produces 250 kW (340 hp) from its three liters of displacement by way of increased injection pressure. This results in 20 kW/27 hp more power compared to the SQ5 TDI. Its peak torque is increased by 50 (36.9 lb-ft) to 700 Nm (516.3 lb-ft).