Audi-AAN/ADU/ABY installs are usually quite easy and smooth nowadays. Rarely (these are almost always home-modified setups) there are some issues. This is one of those cases.
There were many trigger errors originally.
They changed the 2 VR sensors and the engine runs much better now, but there are still a few trigger errors.
Scopeshot of crankhome-VR and HALL:
- The crankhome-VR is inside the HALL window.
- but margin is not as great as originally claimed
- is the HALL signal captured at the HALL sensor ? Or after the AudiTrigger/CamHALLInverter ? (which is inside the box, so unlikely, but who knows...)
- the factory HALL signal is 5V most of the time. See the image on InputTrigger/AudiTrigger with the German text.
- this HALL signal is mostly 0V. That means it would be more noise tolerant without the cam-HALL inverter (and 360 degrees offset in config, configured "without cam-HALL inverter" if it is now configured "with cam-HALL inverter")
But what kind of HALL sensor is that ?
- Factory or some aftermarket sensor ?
- Is the HALL sensor in the distributer or at the front of the head at the sprockets ?
- What is the exact engine code the HALL sensor and the 1 window wheel came off ?
- does the 1-window wheel have a small window, or a giant window (mostly empty, and metal for a few % only ?)
Even more interesting is the noise signal. The VR apparently has 4 evenly spaced noise. It looks like ignition (or perhaps, but much less likely injection) noise from a 4 cylinder. But this is a 5 cyl, right ?
What is the source of the noise ? Maybe WBO2 ?
- It would be interesting to see if the noise goes away if WBO2 and/or idle-air valve are disconnected
Do we have a vemscfg actually used ?