so, looking at the picture, the power/torque at 2800rpm is about 120/260 while in "cheater" mode it is 105/228. And that ratio is preserved through whole 2000-3000rpm range, the range that really matters as most of the driving happens here.
How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
11–20 of 49 posts
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#12Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#13VW owners may be looking at the kind of retrofits California requires for older heavy trucks.[1] The muffler is replaced with a filter which has to be cleaned periodically. This seems to be working; it's rare to see a truck belching smoke in California. So there's a path to a fix available. [1] http://www.arb.ca.gov/msprog/truckstop/truckstop.htm
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#14VW owners may be looking at the kind of retrofits California requires for older heavy trucks.[1] The muffler is replaced with a filter which has to be cleaned periodically. This seems to be working; it's rare to see a truck belching smoke in California. So there's a path to a fix available. [1] http://www.arb.ca.gov/msprog/truckstop/truckstop.htm
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#15> The acceptable particulate level in Colorado emissions testing is 35% opacity. That means the smoke and particulates that are coming out of the exhaust pipe can block up to 35% of light and pass the test. This is a lot of smoke. This is the most shocking part of this... can you really pass with that much smoke coming out the tailpipe? That's absurd and I find it hard to believe. What's even the point of testing bas…
Integration time is also important. Short bursts of dense smoke can be equally polluting as a continuous stream of light smoke.
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#16Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#17Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#18So now, given that "fixing" the problem will cause power loss, and consequently adversely affect fuel economy, wouldn't a number of VW owners opt not to bring in their vehicles for the recall? What's the incentive for VW owners to voluntarily bring in their cars for a regressive (in terms of power and mpg) fix?
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#19So now, given that "fixing" the problem will cause power loss, and consequently adversely affect fuel economy, wouldn't a number of VW owners opt not to bring in their vehicles for the recall? What's the incentive for VW owners to voluntarily bring in their cars for a regressive (in terms of power and mpg) fix?
Re: How Much Power Does the Volkswagen TDI Lose in “Cheater” Mode?
#20This test seems very poor. They didn't measure the NOx emissions so we don't know if it really entered "cheater mode". According to a comment there, it was probably trying to compensate for what it detected as the rear wheels spinning and they need to turn off DSP. It doesn't sound like they really knew what they were doing so I'm not sure I trust it.