Volkswagen is working on a fix to bring their “defeat device” equipped cars back into EPA compliance. The SCR upgrade option is very costly and another possibility is a software fix. The latter option would likely come in the form of an ECM calibration that would work similar to “test mode” at all times, possibly robbing power and fuel economy.
The crew over at TFLCar attempted to emulate this test mode on a dyno but fell short of collecting reliable results.
While I applaud the idea of finding an affected car and trying to generate real-world test results, the tests and analysis in the video do not correlate to an actual EPA test.







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