Speeduino working in parallel to OEM. OEM harness where VR1+ and VR2+ are separate and VR1- VR2- are bridged. MAX conditioner.
Settings (+new ignition mode) It may get sync or not. It started to get sync randomly after OCT18 trigger rework. Comparing AUG18 and OCT18 i found solution disabling one line: Now it get sync every time but need at least 2s of cranking. RISING trigger edge gives good timing with slight drift (around 1degree per 1kRPM). FALLING gives 12 degree overadvanced timing (dont know about drift, didnt measure). With "NEW ignition mode" I can't influence timing with trigger angle. Trigger angle works with "old" ignition mode. Here is composite log as I use this trigger in my daily (RISING edge + new ignition mode): Otherwise than long sync there is also small bogging, ignition drop around 1600, 2400, 2700, 3200 rpm. It is repetable and showed after updating AUG18-> OCT18. Currently I'm using MAY20 and it is still there. Otherwise trigger is fully usable.
Case2: I started working on stand alone version based on 0.4.3c. MAX9926 conditioner.
After few days of problem solving i got it running, with fuel pump, fan and every accessory I need. The problem is it only get sync with FALLING trigger angle: And this is composite log: It sync only on FALLING setting which gives 12degree overadvanced (and stable) timing. It can be corrected using "old ignition mode" but timing becomes unstable on mid/high rpm...
During messing with harness I accidently changed VR1+ and VR2+. It got sync very fast of course it was showing wrong messy RPM.
Now my questions:
What can I do to make it work good? Should I provide VR1- and VR2- separate lines? May I use R10 and R12 resistors on VR conditioner? What trigger angle should be used when working with VR conditioner? Do changing polarity remove 12 degree offset on FALLING trigger angle?