Subaru JDM/Euro EJ207
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:Crank trigger Vr (36-2-2-2)
2:Cam trigger Vr left cam(2pulse)none moving
This is the trigger setup to get the engine running sekventiel
3: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
4:Vvti intake cam right 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
Summary:
- Triggers 3 and 4 seem to be unsuitable for secondary trigger camsync, (because they are indistiguishable in both crankshaft rotations - unlike the sane implementations in BMW, Honda, Suzuki, Ford, ...).
- The cam sensor is good for secondary trigger camsync, but not moving, so useless for camshaft-angle control
- in other words "the good trigger doesn't move with camshaft actuation, the moving ones are not good pattern for syncing".
if I understand right, apparent Options
- control only the left (or right) intake cam
- this is simply stupid as this will ruin the engine with more compression on 2 of the cylinders, so NO
- wasted spark (so camsync is not essential), than Trigger 3 and 4 could be used: a bit unusual, needs testing.
- This would be okay, but not the best setup
- grind 1-1 tooth from Trigger3 and Trigger4 to make the 2 crankrots distinguishable
- NO not destroying the oe cams
- Use Trigger3 for third trigger
- Trigger4 via VR=>HALL adapter: wheelspeed2 input (without heavy filtering and without divider) used for 4th trigger. Firmware mod was implemented in 1.2.4 , 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...).
Does this setup use all 4 vr sensors, or just 3 ?
If 4 vr sensors, then there is the need for 2pcs VR-Hall for both 3rd and 4th cam sensor input, right?.
thanks Skassa
- Please do not call adjustable cam sensors for “trigger” is´s confusion, call them vvti sensors or what ever.
Pre trigger connected to crank sensor
sec. Trigger connected to ?
Vvti left cam signal connected to ?
Vvti right cam signal connected to ?