You can get a smooth, quiet, floaty car and fall asleep waiting to get from point A to B, or enjoy getting there.
To be good at racing, you have to change your name to Sebastien.
I'm having trouble understanding wire compatibility.
Many people cite DUI-31738 as the correct DUI part to fit on our cars, but it appears to have ford-style terminals.
DUI-31737 looks like it the correct part if you want to retain stock wires (very visually similar to what was used here).
However, Summit lists compatibility with 2001-2003 Mustangs, not 2003+ like everybody is saying.
I'll try to have a Ford tech and buddy of mine look up the exact part numbers for both revisions of the coil, and if possible I'll try to build a complete list of what models have what coil, so that we people who want a DUI coil can correctly cross-reference parts.
please someone, pm me.
I DID search and didn't see the exact or complete setup on the classifieds.
I am just not going to go and do this, I know me. I also don't trust the ICM in my OEM, and I'm looking for a simple plug and play install.
Please, and Thank You!
(I'll PayPal a reputable seller today)
So, finally got some news from my buddy at Ford.
From what he looked up, the original Ford coil is no longer available, and his dealership uses Motorcraft part number DG532. This part is listed as compatible with 2001-2004 3.8L Mustangs, and he also cross-referenced it with 1995-2003 V6 Windstars. Some other site lists complete compatibility... it seems like the part is on a LOT of Ford vehicles.
Further research got me what seems to be the correct OEM Ford part numbers, 3 of them.
All of these parts have VW-style wire towers from images I could find on the internet. The difference between them seems to be the pigtail connector. 1 and 3 seem to have more rectangular connectors, while 2 has the round style connector that people with the Ford-style wire tower coil packs, see the first page for an example of this.
The fact that part 5f2z-12029-ad would chronologically be the last compatible is very probable considering that parts from 2005+ Mustangs (4.0L V6) share the same connector.
Therefor, according to what I know, what you really want isn't a later-style Mustang coilpack, but in fact a later one. Later coilpacks would be the ones with different style wire towers that required making custom wires. Either way, since both earlier and later style coilpacks have been shown to work, both parts function exactly the same way, and will get the job done on the VR6.
As for DUI aftermarket coils, DUI-31737 is in fact the correct part for the VR6 if you want to run stock wires. It uses the earlier-style more rectangular connector, and compatibility lines up with what is listed for DG532.
DUI-31738 is infact the later-style replacement, with round connector and different style wire towers. Listed compatibility also matches the info that I have gathered about late-style coilpacks.
Don't take anything I wrote here for gold... I haven't verified this in real life since nobody has those coils stock. But in theory, since the numbers and compatibility all line up, it should be all good.
As always, please coroborate my info with any of your findings!
Last edited by max302; 01-24-2012 at 08:24 PM.
THIS DOESN'T HELP...
But, what I'm assuming is with the newer coil (no mod. required on plug wire ends) the pigtail should be wired to the ICM prongs in a parallel way i.e. no crossing of the pigtail wires... and the older type coils (shorter n fatter) need to be wired differently to the ICM ... hope this is correct...
Do people even read this thread any more? There are ample pics earlier in this thread, people have actually taken the time to document how to perform the mod yet there are always the same repetitive question re: old vs new style and wiring differences. Seriously?
"OP sounds like a MKIV guy"
Seriously... I've read the entire thread, and yes, I've seen the FEW pics of the ICM to the ford plug and there are 2 different ways to do it, apparently, not many are specific... the pics above I believe are from a mk3 vr6 to the 2003. I'm not talking spark plug wires location and how to splice them, which was a terrible question asked over and over.
Don't post unless you can contribute
You apparently can't read too well. I am one of the prime people who has contributed to this thread and several others on this conversion that is why dumb azz questions are so irritating. Your question with respect to the pinout from the ICM to the new coil has been covered. Instead of quoting the pic with the harness heat wrapped why did you not quote a more suitable/applicable pic which clearly shows the wiring paralleled from the stock ICM to the coil. Bottom line if YOU or anyone else can't follow these extremely simple instructions in this DIY then you should not even be attempting it - this is an extremely simple procedure. There no two ways of wiring that ICM to the new coil either.
Here some of my pics yet again. Yes an earlier contribution that I made.
Here is someone else's
Oh and another
Oh is this another?
Learn to read/search effectively, genius.
"OP sounds like a MKIV guy"
I didn't say there were 2 ways of wiring to the NEW coil, I said wiring the new coil is different than wiring the older coil... which is on the first few pages of the thread.. and I just wanted clarity on the subject...
the question was already asked a couple times on this page and previous pages but no one clarified... so I was re-asserting that
i.e. people should label their pics better, just sayin.. but I love this thread, and thanks for your contributions.
Anybody know anything about 034 Motorsports high output coilpack? Can it be used with the stock ICM and pigtail?
Like stated a few months back. Pre 2003 are wired differnt , than 2003+. Dont get confused!!
Of you have the coul that the ends are mooded, you cannot wire it the same way as the coil with OEM wire ends fit. I did the pre set up cuz the wiresends have the locks on them. Best mod you can do. I was the on who listed the DUI. ONly differnce in DUI's for this set up , is if you want the plug vertical, or Horizontal. As for the spark. DUi's are 45k per burst.
Coil DUI demon speed
NGK 6 heat range
OEm wires modded
Davis Unified Ignition
Manufacturer's Part Number
Davis Unified Ignition Screamin' Demon Coils
Summit Racing Part Number
Coil Wire Attachment
Coil Internal Construction
Mounting Bracket Included
Coil Wire Included
Ballast Resistor Included
Mounts in original factory bracket.
The little devil in you will enjoy tormenting the competition with extreme Screamin' Demon coils from Performance Distributors. These coils allow you to widen your plug gaps up to a whopping .065 in. You get an intense spark through the entire rpm range to keep you "screaming" down the road without a loss of power. And your spark plugs stay cleaner longer! The brass terminals of these coils are more conductive than stock aluminum and resist corrosion longer, too. Demon coils are hot stuff and you'll need a better-than-stock set of wires to deliver that hotter spark to your plugs. So, turn up the heat on performance with Screamin' Demon coils from Performance Distributors.
Last edited by Justacar; 02-20-2012 at 10:21 AM.
Just want to say thanks to everybody that had some input in this thread!
I did this tonight and she fired right up first shot!
Still idling REALLY low, but I assume there are other things involved with that.
Interestingly enough I got the coil pack off of an older Explorer at the local yard. Cost me a heavy $10
I will say that the absolute worse part of it was swapping the wire ends. The PO had put some ghey 9.6mm APC wires on it and they didn't like to feed into the Ford wire ends.
Took me about 4 hours total doing the conversion. All in all time well spent.
I think if I do it again with new wires I'll probably route and shorten them like I like, these buggers are all over the place right now. Oh, and I need a better mount setup for the odd end that doesn't reach the stock coil mount. I'm limited on tools and what not right now so I just made some tabs out of left over steel.
Oh, and one thing I'll throw out there for people doing this for the first time in the future is to make sure the little plastic caps that hold the Ford wires down are already on the wires before you crimp the metal connector.... they do NOT fit over everything once it's all put together...
This thread has been awesome for opening up new options for vr coilpacks. Thank you all. using the information posted, I put together a setup that
-uses stock wires
-uses stock wire routing
-still supports the water-pipe/air-tube bracket
I did two things differently than most of the posts that I'm seeing
-I cut the stock coilpack spacer down to 9/16" height
-I flipped the coil (which moves the plug to the bottom of the coilpack -wiring is slightly different -not reversed, but different)
Last edited by cyril279; 03-28-2012 at 01:16 PM.
This thread totally rocks.
I've been sick of my car misfiring and am doing this modification.
Found some parts and can't wait to put it together. I have a spare stock coil pack to work on.
I'm usually all in favor of Junkyarding, but spare time is low and wanted more performance.
Link to summit racing "Screaming Eagle" coil pack for 2003 3.8L ford mustang: DUI 31737
deleted link to pigtail
I'll report back.
Last edited by bikesandcars1; 03-27-2012 at 01:08 PM. Reason: wrong parts given
I got the wrong connector? DOH!!!!
It took me an hour just to find that one that was close.
Did more research: found a couple valuable things:
Found the "Ford Techs" site with a printed guide to all of their connectors.
Using visuals from the pictures in this thread along with a comparison search, I identified the following ford part number:
Motorcraft WPT508 appears to be the connector for the "non plug wire mod" coil #31737
Motorcraft WPT207 appears to be the connector for the more round "plug wire mod required coil"
Link to purchasing pigtail: http://www.autopartstomorrow.com/par...coil-connector
I will report back.
Last edited by bikesandcars1; 03-27-2012 at 01:14 PM.
WPT-508, but this number has been succeeded by WPT-1009, and can be found all over the web for around $22
awesome link to the pigtail kit ID guide
(PAINT IT RED! credit to V-dubbulyuh)
This truly is the easiest coilpack mod you could do for these engines.
Stock wires, Stock ends, aftermarket spark strength, clean & low-profile install.
massive thanks to all those who tried this stuff out before it was proven effective.
Last edited by cyril279; 03-28-2012 at 01:15 PM. Reason: pic & link added
Davis Unified Ignition 31737 + WPT 508/1009 = success
I installed denso iridium plugs and gapped at .050 (!!!)
car idles smoother and pulls harder than it has in years. Pulls right to 6K rpm.
did the swap in wet/rain, which is when my car was acting up badly. started rough with old coil pack. after the swap (about 1 hour) it started right up, no more arcing or shorting.
I did the simplest installation. used the old base (not cut down).
fabricated a 16 gauge sheet metal piece to bolt the center post on the 31737 and used a small bolt to attach the plate to the coil. You could also drill the base and use a through bolt from the bottom (coil is raised off the cylinder head enough to clear).
Spacer was used to support coolant line (old exhaust flange nut). although the height of the bolt head is about 1/4 to 1/2" less than stock there were no interferances.
there's enough pics so I won't post.
Last edited by bikesandcars1; 03-31-2012 at 11:42 AM.
I ordered the screamin Demon coilpack and the connector 2 days ago and they both arrived today! I will be installing tonight
It says they recommend gapping at .065, but I also am running Iridium plugs which they say not to gap; can I leave them at stock gap (about .028 I believe) or should I open them up a bit? The iridium tip looks quite fragile.