@KAISER GARAGE PT
The pair of you have no clue so you are a danger to the car !! Lets guide you right !!
The strategy is better than that !!
How do you think a "insufficient flow" is thrown ??
When the commands the to open - First the decides how far it opens the 0 - 100% and anything in between.
As it opens the it will expect Air Mass to drop by the same amount that it thinks *unmetered air is entering the Engine. If there is an anomaly you get a EML and a fault code.
* Unmetered Air is Air entering the Engine that has not been measured by the MAF (Mass Air Flow Sensor)
If you block the with a plate - The will Open and MAF will not drop = Fault !!
The will also look at the Oxygen Sensor, Of course it will have less Oxygen than Fresh Air !! o2 will sniff that within half a second !!
New New cars a configured differently but on the "Old Nails" such as yours the Oxygen Sensor on diesel cars was put there only there for one reason and that was to monitor function - It had no other function !! ** that info is direct from a BOSCH Technical Training Course in the UK""
European cars will likely be the same - cannot speak for the American models !!
So you can block the but you will have to alter the software !!