[Solved] FAB9 CoP spark blowout
06-26-2014, 10:59 AM
#22
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The dwell reduction is not likely to solve your problem. It seems to be hit or miss with MS - depending on who built it maybe? As far as dwell goes - I run 3ms with a .32 gap at 26psi.
Again, I think it's a problem with the MS ignition trigger having enough current to properly drive our module. I've seen this twice now. There is a fix, I'm just not very familiar with the MS boards. Alternatively you can run sequential ignition (this way you're using 4 channels to drive 4 channels on our module instead of 2 MS channels to drive 4 on our module). If I find some spare time in the next couple of days I'll do some reading, otherwise I you could contact the ECU manufacturer/builder.
Again, I think it's a problem with the MS ignition trigger having enough current to properly drive our module. I've seen this twice now. There is a fix, I'm just not very familiar with the MS boards. Alternatively you can run sequential ignition (this way you're using 4 channels to drive 4 channels on our module instead of 2 MS channels to drive 4 on our module). If I find some spare time in the next couple of days I'll do some reading, otherwise I you could contact the ECU manufacturer/builder.
What does the module recommend for triggers?
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06-26-2014, 11:30 AM
#23
5v and our module want's allofit. However when running wasted spark you're splitting that current between 2 channels and that's where the problem comes in.
I've been working on a harness that increases the signal voltage for situations like this using solid state photo relays but I have limited time on my hands.
Any MS suggestions? Is it as simple as change in value of a pull-up resistor?
I've been working on a harness that increases the signal voltage for situations like this using solid state photo relays but I have limited time on my hands.
Any MS suggestions? Is it as simple as change in value of a pull-up resistor?
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06-26-2014, 11:33 AM
#24
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i think the pull up in the MSPNP1 is 1K? you could easily go down to 100ohm.
yeah page 7: http://msextra.com/doc/general/pix/MS357.pdf
1K pull ups.
when I would build that circuit I'd use 100 or 330ohm pull ups.
yeah page 7: http://msextra.com/doc/general/pix/MS357.pdf
1K pull ups.
when I would build that circuit I'd use 100 or 330ohm pull ups.
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06-26-2014, 11:42 AM
#25
Thank you for the upload - That's exactly what the other MS guy was experiencing. If you're interested I can send you a sample of the latest harness I put together, still PNP. A more reliable solution seems to be the resistor swap though. The less components involved the better in my opinion.
Here is a quick clip of my NB - Same ignition setup I ship to our customers but I'm using an AEM ECU. (video seems pretty tame with what appear to be short gears but it started to slide out on me in 4th gear and I have a 3.636 rear end).
Here is a quick clip of my NB - Same ignition setup I ship to our customers but I'm using an AEM ECU. (video seems pretty tame with what appear to be short gears but it started to slide out on me in 4th gear and I have a 3.636 rear end).
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06-26-2014, 11:53 AM
#26
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Thank you for the upload - That's exactly what the other MS guy was experiencing. If you're interested I can send you a sample of the latest harness I put together, still PNP. A more reliable solution seems to be the resistor swap though. The less components involved the better in my opinion.
Here is a quick clip of my NB - Same ignition setup I ship to our customers but I'm using an AEM ECU. (video seems pretty tame with what appear to be short gears but it started to slide out on me in 4th gear and I have a 3.636 rear end).
Here is a quick clip of my NB - Same ignition setup I ship to our customers but I'm using an AEM ECU. (video seems pretty tame with what appear to be short gears but it started to slide out on me in 4th gear and I have a 3.636 rear end).
I should just sell it and get MS3e :/
Yeah I'd rather do the resistor (but that would make it one-off unsaleable correct?)
Problem 1: I don't know where that is on MS2PnP
Problem 2: Just a 100 ohm resistor? That's it
Problem 3: It's hot as hell here in Florida. I have overheating issue to address since I went with one massive intercooler.
Question:
In MS2 should ignition be on Coil on plug instead of wasted spark like it has been?
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06-26-2014, 01:28 PM
#31
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I'm getting a meaty radiator, I got 2 fans already. Make a nice shroud, and duct my 2 smaller side vents on my bumper to the radiator to bypass the intercooler.
I got to look into the sealing thing.
So I'll probably be swapping back to stock ignition till this can get everything sorted out
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06-26-2014, 03:20 PM
#32
Incorrect, it will still be compatible with the stock ignition (and other ignition systems). Most systems require a minimal voltage of 5 to trigger and you'd still be providing this. In fact, if I recall - somewhere in the DIY (?) documentation the mention changing the resistor value to get a stronger spark from stock ignition systems.
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06-27-2014, 12:44 AM
#33
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Incorrect, it will still be compatible with the stock ignition (and other ignition systems). Most systems require a minimal voltage of 5 to trigger and you'd still be providing this. In fact, if I recall - somewhere in the DIY (?) documentation the mention changing the resistor value to get a stronger spark from stock ignition systems.
BTW thanks just JUST releasing info about doing LS coils :(
I sent DIYAutotune an email and linked this topic maybe they can help me out. I do have to send my MS back to get the IACv and O2 circuits fixed.
I installed the MSM coils on the denso plugs tonight and reverted the settings till we can figure this out.
I need a radiator so bad.
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07-01-2014, 05:09 PM
#40
The Quadspark still requires a 5v signal. You'll run into the exact same problem trying to run it as a wasted spark. Driving two BIP373 transistors (found in the Quadspark) with one MS ignition signal.
Another MS customer just scoped his ignition signals while running our system and the signal voltage was 4.2v. Not a strong 5v unfortunately.
Quote from the QuadSpark product page: "Each channel needs a 5 volt logic level signal."
Another MS customer just scoped his ignition signals while running our system and the signal voltage was 4.2v. Not a strong 5v unfortunately.
Quote from the QuadSpark product page: "Each channel needs a 5 volt logic level signal."
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