Audi A6C4 1995 (1996) AAN engine installed in 2025 (Vizsgaztato Pityu)
Crankhome VR trigger see TriggerScoping and InputTrigger/AudiTrigger
Checked crankhome-VR with DSO138 scope. It was -peak first, than +peak, NOT good, had to be swapped as instructed on VemsAudiAan
- Swapped red and violet wires.
- Checked crankhome-VR again with DSO138 scope, now good: +peak first, -peak later since LM1815 triggers on negative going zero crossing.
The wires were good with red in middle (maybe contradicting the VemsAudiAan page but scope is always right).
Engine started on first attempt.
Actually it was behaving, and powerful... But owner already contracted with some VEMS tuner (maybe Kulinpapa?) to tune it on 4-wheel dyno the next day. So we did not press it. But lambda was at least quite reasonable at high power also.
- overrun fuelcut (when throttle is released, but engine RPM is still high and fuel is cut so engine goes to idle) could be somewhat smoother...
- [log and config zip] with 1.2.38 firmware