Hello again,
So, the engine control unit and the new injectors arrived yesterday.
This morning, I installed everything, bled the system, and started it up.
"That was the smoothest 5-ender we've ever had..."
After that, the leak test was performed using a mixture of 90% water and 10% dish soap. Only one of the double-walled containers produced bubbles.
BUT, all 5 spark plugs produced foam

.
I gently tightened it until no more air bubbles appeared.
With the temperature sensor connected, turn on the ignition and use the clamp meter to measure the glow plug cables. Got it.
The first test run was disappointing; there was no train, and after the year 2000, there were no more connections

.
The error was quickly identified - it was a "fault memory" issue. After clearing it, everything worked as expected.
Okay, I'm completely thrilled and I can only recommend the ECO fuel-saving chip tuning. My AEL engine has never run so smoothly. And I haven't noticed any difference from the vegetable oil adaptation yet (no rougher running or anything like that).
After about 100 km, I wanted to adjust the basic settings using the TDI Timer, but unfortunately, the point moved out of the visible area. The TDI Timer's scale only goes up to 180 for fuel temperature, but I was reading 200. Additionally, I received the message "Fuel temperature too high."
I'll test it again tonight or early tomorrow morning after I fill up the tank (currently with diesel).
Sure, here's the translation:
"Best regards," or "Sincerely,".
dakoal