SubaruEj (2013-05-06 20:28:31)

Subaru JDM/Euro EJ207

CarInfo:

Subaru Impreza STI JDM/EURO 2001-2005 (265-280)standard

pink topfeed injectors 550cc

Cop ignition coils firing order 1-3-2-4

the engine is a boxer engine, there for there is right and left

cyl 1+3 is right side

cyl 2+4 is left side

1: __primary trigger__: Crank trigger Vr (36-2-2-2)

crankwheel1modi.jpg

2: __secondary trigger__ : Cam trigger Vr left cam(2pulse)none moving

a1463ee5.jpg

This is the trigger setup to get the engine running sekventiel

cf70e38a.jpg

3: __Third trigger__ : Vvti intake cam left side Vr sensor (boxer)4 spots/90degrees moves when avcs is controlled

  • any idea at which primtrig tooth does it cross the 0V line (negative-going edge) ?
  • no sorry, this is scopeshot while cranking 180rpm
f4480a56.jpg

4: __4th trigger__: Vvti intake cam right side Vr sensor (boxer)4 spots/90degrees moves when avcs is controlled. With the "wheelspeed2 calibration=1" config, "secondary trigger position" will reflect the angle of this (so control will use this as feedback signal instead of sectrig)

  • any idea at which primtrig tooth does it cross the 0V line (negative-going edge) ?
  • no sorry, this is scopeshot while cranking 180rpm
558e660f.jpg

See 1.2.4 on GenBoard/UnderDevelopment/FirmwareChanges , it refers very clearly to where the 3d and 4th trigger 0/5V logiclevel pulses must go in.

This setup uses all 4 vr sensors:

  • Trigger4 via VR=>HALL adapter: wheelspeed2 input (without heavy filtering and without divider) used for 4th trigger.

Summary:

Firmware mod was implemented in 1.2.4 to use all 4 sensors

see GenBoard/UnderDevelopment/FirmwareChanges : with wheelspeed2 calibration=1 "sectrig position" measures "4th trigger input" (SCL pin similar to 2nd wheelspeed input)

  • a good workaround, required because the camsync does not move with cam actuation (and the signals that move are not suitable for camsync as it would make sense like in all other VVTI implementation BMW, Honda, Ford, etc...).

Is this correct?

Subaru-cam-trigger1.jpg

Yes, seems correct !