Good morning, someone knows the values for the speed, which for the above engine (D4164T) can be reached at the AU in high idle if necessary up to the control speed. In the attached ZDK brochure to the AU I read on p. 11 that at least 90 % of the nominal speed must be reached. This would be at a nominal speed of 4000 rpm only 3600 rpm, i.e. a huge difference compared to the control speed of approx. 5100 rpm measured by me in advance. In some ways, the electronic pedal encoder will limit the speed so that the tester doesn’t turn the engine up higher than absolutely necessary. There are experiences. Thanks Chekorte