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The engine is a bmw s50b32 converted to single vanos on intake with a trigger with one tooth installed at ~60 degree before missing tooth, the vems trigger log also shows this. The ecu is unit 7148, vr vr and 4 pfet for vanos control The car runs perfect in wasted spark mode. Is making 806hp at 7700rpm and 1.5bar boost. Now I'm trying to make vanos work on intake so I can make boost faster, now I see 1bar at 5000rpm. Vanos is working good from the logs I made but I have problems with the secondary trigger. When cranking the signal is very good and stable, the problem is when I start the engine. I have to many sectrig and I can't rev past 1300 (similar is the symptom when VR is reversed), the ecu seams to reset as the afterstart flag comes on. I tried to play with the filter settings (minimum angle 39, maximum 120) and i manage to filter it a little and now i receive only sectrig pos bad and the engine revs, as you can se in the logs at ~4000+rev the trigger error is gone!!! I made the following: * Changed the sensor.Same result ** no need to try both, just try the good GenBoard/Manual/VrSensor/Polarity, - Changed the sectrig wiring, completely separate from the engine wiring, from the sensor strait to the ecu, Same result - Changed the polarity of the sectrig. the signal moved to the second tooth after the missing tooth and the logs shows ~350 degrees. This was wrong because the trigger was installed at ~60 ( 9 tooth before missing tooth )... anyway with the polarity change same sectrig errors Don't set VR polarity according to position. Just set the right GenBoard/Manual/VrSensor/Polarity - I changed the vems ecu with a similar one ( vr vr ). same result * I use a oscilloscope to see if the signal has noise or something. The signal is good, a little noise when cranking but good signal when the engine starts. ** can we see the scopeshot ? Does the pulse start with positive peak than negative peak ? Sure ? What is the amplitude (at what RPM ? ** What is DC voltage ? (VR sensor DC voltage can be measured even with stopped engine, with ignition on) - I tried and pull the sensor out ~1mm and got less errors and manage to rev the engine to ~2500rpm with no filters , if i try to pull the sensor more than 1mm the sectrig signal is gone. - I started with firmware 1.1.96, with this firmware the car worked for a few years with the old ecu without the pfets. Now i have firmware 1.2.11 I will try to look again at the wiring, grounds and maybe rewire the crank and cam triggers!!! I don't know what "ignore sectrig pulses above" and "maximum primary edge between secondary edges" does?!?! How should i configure this settings??? Please let me know if you have any ideas trigger logs: http://www.vems.hu/files/Catalin_S50/ ----------------------------------------------------------------- I manage to install another vr sensor ( crank sensor from a Maserati Quattroporte) it has 900ohm and seems that it works good. Only a sectrig bad flag right when the engine starts and when I rev from idle. This is with no filters. Original sensor scopeshot: http://www.vems.hu/files/Catalin_S50/original%201300ohm.jpg Maserati sensor scopeshot: http://www.vems.hu/files/Catalin_S50/maserati%20sensor%20900ohm.jpg Positive pulse should be followed by negative pulse (triggering happens at the zero-crossing negative-going edge), so these show '''Reverse polarity'''. Also, the amplitude of oscillations (child teeth ?) after the pulse are insane ! Is the large pulse appr 10 teeth after the primtrig missing tooth ? (if yes, than secignore=16, that is ignore sectrig after tooth22 could be useful)... * The pulse in the trigger log is 9 teeth before primary missing tooth and camshaft full advance is 16 before
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