BMW M50B25 sensor in Mazda engine... Varying amplitude "runout" problem... Laser-cut homemade wheel...
- 50/200 ratio wheel amplitude... Extremely shit signal...
good till appr. 4000 RPM... But trigger error above 4000 RPM
- Suspect: reversed polarity VR...
- weird: similar symptom if reversed...
- runout... obviously.
Adaptive hysteresys MUST BE DISABLED if the tooth amplitude varies too much (1:4 ratio is crazy nonsense big amplitude changes)...