Subaru ign output

[Denmark]

Hi All.

Could someone please help me with the the ign output on the subaru?

the firing order is 1-3-2-4, and it cops fired through a external ignitor.

I can see that on the Wiki page its recommended to run wasted spark, that would mean that i have to run duelout , right?

Or can someone make me the config or megatune setting for it?
this is how the wiring is made:
i have made the the first four ignition outputs to logic level,
connected like this:

COIL 1 = EC36 PIN35 = ING 0
COIL 2 = EC36 PIN33 = ING 1
COIL 3 = EC36 PIN34 = ING 2
COIL 4 = EC36 PIN36 = ING 3


This is a scop trace from the other day.




Thanks,
Skassa

[[email protected]]

the firing order is 1-3-2-4, and it cops fired through a external ignitor.

COIL 1 = EC36 PIN35 = ING 0
COIL 2 = EC36 PIN33 = ING 1
COIL 3 = EC36 PIN34 = ING 2
COIL 4 = EC36 PIN36 = ING 3

Wasted spark pairing would be 1&2, 3&4 so you have the wires connected correctly there.
Just select Settings->Ignition Settings and set Dual Output Mode to Enabled.  And Alternate banks from h[0] to 01..00
Then in Settings->Ignition Outputs Dual set
0 to 2+3 (EC36 pin 34+36)
1 to 0+1 (EC36 pin 35+33)

[Denmark]

Thanks,

I just had the coil on cylinder 1 out,so i could adjust the tdc delay, but there is no spark at the coil,
So i tryed to measure the 5v direct at the ecu, but i cant measure anything,
But that is probbely just becourse it such a short pulse, that i DVM cant measure it,

So i just think i give up, using the logic level outputs, as i dont think they can fire the ignitor(was that the problem you have had on a Nissan, Rob?)

Tomorrow i will try the stepper output instead, hoping that  will work..

All info would be great


Thanks,
Skassa

[dnb]

That was the problem I had on the Nissan - and it's the same ignitor on both the Nissan and Scoob.

You can get around the problem using the stepper driver as the coil driver, although I am not doing this because I am thinking of a VEMS on my MY99 Scoob which needs the stepper driver to drive the stepper.

[Denmark]

Thanks for your answer, i also plan to install it into some V5-V6,so i have a friend who have made this setup to make the logic level work better,
Can some of you please rewiew this.Ans please make a comment, as i´m going to try tomorrow, if there is no other clever or smarter ways of doing this,

[[email protected]]

Hilly, has already done this on his Audi engined Lotus:

I don't see any mention of the buffer chips, I guess you could in theory use a stepper chip to do the same work.

Rob

[Denmark]

We did try the above, but it did not work, then we found out that there is no signal comming from the 74HC259 chip,so we can´t get it working, there is power supply, but not gate signal..

Hmm,
Maybe i need to drive the Ring with oe ecu, but that would be a disaster, as there is no power, and  the oe lowend mapping is really lacking, fuel and ignition


/Skassa

[Denmark]

I will later this evening, try to use the stepper output to see if i can get a spark..

[Denmark]

well right now i have just had it with VEMS .

[[email protected]]

The power supply is constant?  Have you tried inverting the signal?

[Denmark]

The power supply is constant,

What is the H2table supposed to look like , if i use A-B-C-D from the stepper chip,

And Cyl1 is A,
cyl2 is B
Cyl3 is C
Cyl4 is D,

It´s duelout h0 = 01-00
IgN Output in megatune :
00=stepper C+D
01=stepper A+B

Waterpump is activated with S259CH7


Thanks,
Skassa   

[[email protected]]

All that looks correct to me - still having no luck?

When we tested the Nissan igniters (the Mitsubishi DIS4 IIRC) which is the same igniter pack as you have.  It looked as if we'd be able to fire two channels from one stepper output, which would give wasted spark and leave two stepper channels free.

[Denmark]

No it´s not working,

But when i download the config and table, the H2 table looks strange, something like :
H2 37 27 07 17 7f 7f 7f 7f,

So i think i manuel have to plug the right numbers in, before uploading it again,

But when using all 4stepper outputs like like writen above, isn´t it supposed to look like:
H2 20 10 00 00 00 00 00 00, when running wastedspark?

Thanks,
Skassa

[[email protected]]

Using 20 10 ... in H2 would drive the IGBT outputs (or logic levels in this case)
I'll check a working H2 this evening, take a look in the wiki to see if you can find anything of use on the Stepper outputs.

[Denmark]

It´s really strange,
later today, we will measure the the input to the stepperchip, but i actully think, that there now is something wrong with the ATmega,
Have there ever been a board were all things work, but no ignition outputs.

Otherwise we will try to put a 36-1wheel on a drill, and the use that input to see if that can make a output.

I have tryed both the 4 logiclevel the 4 igniton fets, and the stepper , but there is no output


Any other suggestions?


Thanks,
Skassa