I already have a VEMS V3.8 ECU with auditrigger/camhall inverter (suitable for VR/VR and VR/auditrigger)
Planning to install on Audi 4.2 Liter V8 ABH code engine.
The engine has 3trigger like Audi AAN.
- Primary (VR)trigger, RPM sensor are sensing 136 yes 136 teeth on starter ring
- Secondary (VR) trigger are sensing the TDC point. 72° before TDC.
- Camshaft HALL window for masking sectrig. 1 small window wheel (short 0V and long 5V ?), like on 3B or AAN.
- note: this is NOT the same as "third trigger" (third and fourth and fifth triggers are connected to specific inputs)
272 teeth on full engine cycle, so 34 tooth between events:
- divider=17, next trigger tooth=2 (I would use this first, after the divider, setup is similar to c016, 16 pulse wheel)
- divider=2, next trigger tooth=17