Quote:
Originally Posted by JCL
It sounds like the software installed on the vehicles turned off already installed emissions devices. The fix would be to install updated software that doesn't do so. The vehicles could seemingly meet the test standards, but were tuned to not adhere to those settings when they detected operation that was other than the test cycle.
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^^^The computer cuts the power and change the engine mode so it conforms to the emission standarts. These cars have no DEF, or Urea injection installed and this is what takes care of the nitrous oxides.