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VW Jetta TDI dyno shows HP loss trying to recreate cheat mode

Volkswagen is working on a fix for diesel-engined vehicles that are out of compliance with emissions regulations in the US and other countries. We're told that engineers will be presenting a solution internally sometime this month, but that doesn't mean we'll actually see it in the wild this month. One big question we have about the coming fix is, will it affect the car's performance? That question relates to another we have about the engine as it is: How much performance would the 2.0-liter diesel lose right now if it were turned down to pass US emissions? The Fast Lane Car tried to sketch some answers by going to a shop in Denver, Colorado to run a 2011 Jetta TDI with a six-speed DSG transmission on an all-wheel-drive dyno. The thinking was that if you ran all four wheels the car would think it was on the road, whereas if you ran only two the car might think it's being tested. We'll get straight to the numbers: the stock sedan is quoted at 140 horsepower and 236 pound-feet of torque. When run with all four wheels turning it produced an uncorrected 114 hp and 214 lb-ft at the wheels. When run with just two wheels in motion the Jetta got 113 hp and 188 lb-ft at the wheels. Reading the graph, we're told that power differences between the two runs were as much as 15 hp and 32 lb-ft. You'll need to take some salt with these numbers, though, because the dyno and test protocol in the video are nothing like those used by the EPA. The shop attempts to trick the Jetta into 'emissions testing mode' by using the front wheels only for the two-wheel-drive run, but we have a feeling the software code at issue is far more sophisticated than that, since the ICCT, UVA, the EPA, and CARB investigated the situation for more than a year and couldn't figure out. Also, the technician adjusts for being a mile above sea level with a correction factor of 1.2 applied to horsepower and torque, which inflates the disparity in the final power differences over the two runs. Go to YouTube and read the lengthy comments on the video left by Andrew Price for a more thorough dissection of what could explain TFL's disparities. You can watch the video above, and feel free to try and dissect the results yourselves in the comments below. Related Video:

Porsche 911 and Nissan 350Z get smoked by unlikely hero

So a Nissan 350Z Procharger and a current Porsche 911 GT3 drive onto the Autobahn together - stop me if you've heard this one before - and they decide to race. We're not sure how much power the Z is packing, but the stock model topped out at 306 horsepower on the last year of its run in 2009. And if that's a stock GT3 then it will be rocking something like 475 horsepower. So the Z and the GT3 give it a racing go, and just as one of them starts to pull away they're both overtaken by one of the most unlikely dark horses you could imagine. It's a really short video and we won't spoil the surprise, so check it out above. News Source: Woreth V12 via YouTube Nissan Porsche Volkswagen Coupe Hatchback Luxury Racing Vehicles Performance Videos porsche 911 gt3 autobahn

11M VW diesels affected, Porsche and Audi under investigation

Volkswagen's diesel scandal is growing exponentially larger. In a new statement, the company admits that 11 million vehicles worldwide might be equipped with software capable of evading emissions testing. In addition, the Environmental Protection Agency is beginning an investigation into the 3.0-liter V6 in Audi models and the Porsche Cayenne in the US, according to The Detroit News. The automaker claims that from its investigation so far, the "relevant engine management software is also installed in other Volkswagen Group vehicles with diesel engines." However, the company finds that the "noticeable deviation" in test results and real-world numbers only relates to the Type EA 189 powerplant. That still leaves 11 million vehicles potentially skirting emissions rules, though. Governments around the world have started taking a closer look into the company, too. In the US, the EPA has begun testing VW's V6 diesel because "they were certified well before we knew what we know now," Christopher Grundler, director of the EPA's Office of Transportation and Air Quality, said to The Detroit News. The agency has started checking diesels from other automakers to make sure they're meeting the rules, as well. Germany, the European Union, and South Korea have instituted similar investigations. In response, VW is setting aside 6.5 billion euros ($7.25 billion at current rates) to cover servicing all of these diesels. The company admits that the figure might have to be adjusted depending on what happens next. The money is being deducted from its third-quarter earnings. Related Video: VOLKSWAGEN AG HAS ISSUED THE FOLLOWING STATEMENT: Sep 22, 2015 Volkswagen is working at full speed to clarify irregularities concerning a particular software used in diesel engines. New vehicles from the Volkswagen Group with EU 6 diesel engines currently available in the European Union comply with legal requirements and environmental standards. The software in question does not affect handling, consumption or emissions. This gives clarity to customers and dealers. Further internal investigations conducted to date have established that the relevant engine management software is also installed in other Volkswagen Group vehicles with diesel engines. For the majority of these engines the software does not have any effect. Discrepancies relate to vehicles with Type EA 189 engines, involving some eleven million vehicles worldwide.