Customer has a drift car, BMW with installed Dodge Viper 8.3liter V10 engine.
Engine is odd-fire V-10 (90-54 degrees)
- firing order 1,10,9,4,3,6,5,8,7,2
- odd fire TDC 0,54,144,198,288,342,432,486,576,630
- WHEN is the TDC following/relative to the sectrig?
- it matters little which cyl it belongs to (but take note if you know)
TODO:
- considering that internal sync-points are the pulses after the short (18 deg) gap
- determine per cylinder ignition delay: alternating 0,18 ??
- and the 8 entries of reftooth
- similar to Maserati config (subaru6+7) but 10 tooth configured: config.tooth_wheel=0a
- apparently 5 channel ignition (ignchmax=04) must be configured
- but in firmware the last 2 entries of reftooth, per-cyl delay can be wired in (traditionally "only" 8 channels configurable freely)
- check spark at initial sync
Primary trigger is HALL and trigger type is apparently coil-type (flywheel has 5 pairs of teeth, see photo).
EDIT: Trigger log: both primary and secondary trigger: http://www.porsche-foorum.org/album/displayimage.php?album=lastup&cat=0&pos=0
- [same content in zip]
- The 72 deg (10 cyl) seem to be 18+54 (18 deg=15.5 / 61.6 msec * 72 deg)
- and 18 deg + sectrig comes after 24 crankdeg + following primtrig after 30
VEMS reads RPM but throws trigger errors
- with what .vemscfg exactly ? Or better .vemslog ?
- The config is definitely not good, the spark time is not consistent.
Is it possible somehow to mask the 2nd tooth of each pair so that VEMS trats the primary trigger as coil type with 5 teeth?
- search for oddfire or Maserati (fphil)
Secondary trigger is HALL, pattern is unknown at the moment. UPDATE: cam trigger is "half-moon" style: one teeth which is 180 degrees wide.
Ignition system is wasted spark, 5 outputs is needed
(jzw!Wk~$(KGrHqZ,!hYEw5P05ggIBMbvI+QelQ~~_35.JPG)