Hi, I am 30-years old Finnish Saab-maniac and I am trying to get my project car to run with v3.3. I have started to build up a harness, I am sure I will have many questions to ask before Saab will start up :).
Would be good to take note of engine cylinder-count and firing order.
- Firing order 1-3-4-2
Engine is B234 from -91 Aero, bored to maximum oversize (2.4L)with Holset HX40 Super and custom headers.
Management Genboard v3.3 with
- 4bar map
- primary trigger in cranck (12V supply HALL with 0/5V output)
- secondary trigger in distributor (12V supply HALL with 0/5V output. Will the secondary trigger be used? Probably later. Not needed initially)
- ignition: Bosch wasted spark coilpack.
- Secondary hall will be used asap.
Fuel system handled with -044 Bosch and 998cc/min Delphi 2Ohm injectors.
With TS diode, [50w 6R8 power-resistors] (really) needed in series with the injectors, because the TS diode flyback (which makes extreme fast injector closing and very nice injector behavior at idle) does NOT allow PWM-ing.
If there is no TS diode inside the ECU (not 30V flyback!), neither outside the ECU (that is, the injector+ is connected directly to EC36pin23 with nothing in between), PWM-ing is allowed, but you have more parameters to get wrong (and potentially damage something). The series 6R8 50W resistors are a good option.
- There is not TS diode inside, was going to put it outside. Box has power-flyback.
Harness is almost ready, most of the sensors already giving data, next task is trigger settings, then idle solenoid.
Can someone help with trigger setting? Here is art with Paint..
Motor rotates clockwise.
First guess: "falling"
- known: "multitooth", "TDC after trigger 45 grades".
In other words:
- ignchmax=03
- primary_trigger=00 (01 would be rising edge)
- secondary_trigger=02 (initially disabled; not needed)
- tooth_wheel=03 (since 4-1 type missing-tooth wheel)
- another_trigger_tooth=02
- otherwise a standard 4 cylinder copy someone's config, like MembersPage/MarcellGal/EngineSwap
Specify ignition wiring (ignch selection). After that it's easy: not too many config options with 2x2 wasted spark coilpack.
Falling or rising edge
Why do you think it's falling edge ? Do you have information on the signal level for the black and white parts (colors as on the above image).
- Black parts of the first picture are holes, if it mixes minds. I am a bit lost with these trigger things, so if this picture helps more. Current trigger plate is modified like this:
