Re: VW admits to EPA that diesel equipped cars will only meet emissions when tested
Recently a privately run investigation showed a fwd Jetta TDI dyno tested was down 35 ft/lbs of tq when run on a two wheel dyno. Yet when run on a four wheel dyno, with the rollers all connected, all wheels turning at same speed, made more torque. EPA test is most likely done using a two wheel dyno.
Horsepower was within 2 hp two wheel or four wheel dyno but torque was very different.
When run on a two wheel dyno the ABS light comes on. Possibly that was an input to use and to revert all the timing tables etc.
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