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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:

Jay Leno takes an in-depth look at a 1964 Porsche 356C restomod

Look nearly anywhere at Dr. Anand Rajani's 1964 Porsche 356C, even the engine, and you would never realize that it boasts around 50 percent more power than stock. There's no sign of any other mods to make the drive a bit more modern, either, but they're there. The car's invisible upgrades result in an amazing transformation of a car that started out pretty great to begin with, and Jay Leno can't seem to get enough of driving this beautiful, gray coupe with restorer John Willhoit. Before going for a drive, Leno takes a deep dive into the details of this Porsche's modifications, particularly of its engine. The result of all the work is a mill that looks visually stock but actually boasts a significant jump in displacement. Willhoit admits this is particular one is a fairly conservative build but output still reaches 145 horsepower and 145 pound-feet of torque. If you're worried that Jay's CNBC show might have a detrimental effect on the quality of the Jay Leno's Garage YouTube video series, then here's your answer. For vintage Porsche fans interested in the nuts and bolts of making them even better, it's hard to imagine Leno making a better clip than this one.

Porsche Cayman GT4 spot has us reaching for our driving gloves

We've got to hand it to Porsche for finally unleashing the potential of the Cayman, and not worrying about it infringing on 911 territory. The latest Cayman is, by all accounts, a superb sports car in its own right, gets even better as the Cayman S and that much more so in GTS spec. But the new Cayman GT4 takes things to a whole other level with a 3.8-liter flat six driving 385 horsepower to the rear wheels through a six-speed manual. Old school is what it is, and certifiably off the leash. We brought you the full skinny on the new GT4 late last night when it surfaced, but now Porsche has released a video clip highlighting what makes its new pocket rocket look so great. It's got Nurburgring graffiti, intimidated neighbors, barking fluffy dogs, gape-jawed children, and of course footage of the Cayman GT4 itself doing what it was designed to do. All we need now is to get our driving gloves on its Alcantara steering wheel and ball-shaped shifter.