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Discussion Starter · #1 ·
We've had customers ask if they can use an MSPNP Gen 2 with distributorless ignition. The answer is yes, and the easiest way to do this is to get an EDIS-8 ignition off an OBD1 modular motor. Here's a first draft of how to make this happen!

First, you'll need to get an EDIS module and a 36-1 crank trigger setup. You could use the Explorer crank wheel and timing cover, or fabricate up something with our trigger wheels, like this guy did:

DIY Stud of the Month -- DIY Tips and Tricks

You'll probably want to go over that whole article as it's got a lot of useful tips.

Now, for how to connect the EDIS module to the MSPNP.



The PIP signal goes to the same connection on the EEC-IV ECU that the PIP signal came from on the TFI distributor. You could even cut this wire (it's on the exact opposite side from the ground wire) at the TFI module connector and tap into it there.

The SAW signal will need to be hooked up to the DB15 connector on the back of the MSPNP, as the ignition output signal on the MSPNP itself will be a 0-12 volt square wave. The signal at the DB15, though, will give you the 0-5 volt signal an EDIS module needs.

Lastly, you'll need to change the settings. You aren't using quite the hardware setup the MS2/Extra manual usually uses, so your settings will be a little different.

Under Tach Input / Ignition Settings:

Spark mode: EDIS
Ignition input capture: Rising edge
Spark output: Going high / inverted
Number of coils: Single coil
Spark A output pin: IGN1

Under More Ignition Options:

Dwell type: Fixed duty

Let me know if you have any questions. If there's enough interest, we can make this into a regular tech article on our site.
 

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WOW! nice matt! thats sweet, as close to idiot proof as it can be. heres a stupid question, could COP's be used in place of the coil packs? and would this be the same with the PNP gen 1?
 

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Discussion Starter · #3 ·
Er, the MSPNP Gen 1 was only for Miatas.

You can wire the Ford COPs in series and use them with an EDIS module.
 

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WOW! nice matt! thats sweet, as close to idiot proof as it can be. heres a stupid question, could COP's be used in place of the coil packs? and would this be the same with the PNP gen 1?
It could probably be done but it would still be in wasted a spark configuration on an 8 cylinder. The EDIS-8 only has 4 spark outputs. Because of that I would argue that there's no point.

At a very high level, EDIS-8 is basically TFI with higher resolution input, and 4 spark outputs instead of 1.
 

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Just to verify, do you mean this PNP:



or this PNP:



Or both. If EDIS will not work with the first one what would I have to do internally to make it happen?

-Jason
 

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It could probably be done but it would still be in wasted a spark configuration on an 8 cylinder. The EDIS-8 only has 4 spark outputs. Because of that I would argue that there's no point.

At a very high level, EDIS-8 is basically TFI with higher resolution input, and 4 spark outputs instead of 1.
wasted spark is fine with me, i know the coil packs have higher output but i figure there will be benefits even with COP instead of coil packs, i just dont want the clutter of packs/wires and COP will eliminate that.
 

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Just to verify, do you mean this PNP:



or this PNP:



Or both. If EDIS will not work with the first one what would I have to do internally to make it happen?

-Jason
yeah thats what i was asking too, sorry if i was unclear.
 

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DANG! it figures!
Regular MS2 can still run EDIS, it's just a different set of instructions.

For example, "The SAW signal will need to be hooked up to the DB15 (pin 2) connector on the back of the MSPNP".

Your MS2 doesn't have a DB15 :)

So that means the SAW connects somewhere else. It can still be done.

If you look here, at the MSExtra EDIS page it says that the SAW connects to pin 36 of the DB37.
 

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Discussion Starter · #12 ·
If you're using an MS2 with adapter harness, you'd have to take it apart and put the EDIS mods in.
 

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If you're using an MS2 with adapter harness, you'd have to take it apart and put the EDIS mods in.
Oh I gotcha, the MSPNP is capable of both where the MS2 would need the appropriate hardware config.
 

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Oh I gotcha, the MSPNP is capable of both where the MS2 would need the appropriate hardware config.
the DIS is definately on my long term list, so everytime i see a part laying that i KNOW i will need... i grab it! so far i found an explorer cam sensor laying at one friends house, then today i was at another friends house and saw a set of explorer coil packs in the bed of his truck with a load of trash! snached it! im on the prowl for an edis8 module now.
 

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I run the "older" PNP MS2, only mod I had to do internally to use EDIS was snip a wire...Literally.
 

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I run the "older" PNP MS2, only mod I had to do internally to use EDIS was snip a wire...Literally.
nice, did i see a write up somewhere that you did on this?
 

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My apologies in advance if this sounds like a dumb question, but can aluminum foil tape (EMI shielding type) be used to wrap the VR sensor wires and the EDIS pin 7 wire, vice wrapping the wires together with shielded wire?

Also, does the EDIS module pin 2 (IDM) connect to the MSPNP DB15 pin 11? See attached image for reference.

I'm currently running MSPNP on my '95 Cobra and I'm extremely happy with it. The EDIS conversion is my next step.

Thanks,
Mitch
 

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Discussion Starter · #18 ·
My apologies in advance if this sounds like a dumb question, but can aluminum foil tape (EMI shielding type) be used to wrap the VR sensor wires and the EDIS pin 7 wire, vice wrapping the wires together with shielded wire?
No reason you can't.

Also, does the EDIS module pin 2 (IDM) connect to the MSPNP DB15 pin 11? See attached image for reference.
No; MSPNP does not make use of the IDM signal.
 

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Now, for how to connect the EDIS module to the MSPNP.



The PIP signal goes to the same connection on the EEC-IV ECU that the PIP signal came from on the TFI distributor. You could even cut this wire (it's on the exact opposite side from the ground wire) at the TFI module connector and tap into it there.

The SAW signal will need to be hooked up to the DB15 connector on the back of the MSPNP, as the ignition output signal on the MSPNP itself will be a 0-12 volt square wave. The signal at the DB15, though, will give you the 0-5 volt signal an EDIS module needs.

Lastly, you'll need to change the settings. You aren't using quite the hardware setup the MS2/Extra manual usually uses, so your settings will be a little different.

Under Tach Input / Ignition Settings:

Spark mode: EDIS
Ignition input capture: Rising edge
Spark output: Going high / inverted
Number of coils: Single coil
Spark A output pin: IGN1

Under More Ignition Options:

Dwell type: Fixed duty

Let me know if you have any questions. If there's enough interest, we can make this into a regular tech article on our site.
Matt,

I plan to start wiring this up over the weekend. I have a remote-mounted TFI ('95 Cobra) and wanted to make sure I'm wiring this correctly. Basically, ditch the TFI module, take the wire from the TFI connector that connected to pin 6 on the TFI and connect that to pin 1 of the EDIS harness (see attached image). Is this correct?

Also, I recently converted my car to a Foxbody throttlebody setup--still haven't ran the car with the setup. Since I'm using the 94-95 MSPNP unit, will I encounter any issues with the combination of the Foxbody conversion along with the EDIS setup?
 

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