How To: Screamin Demon Ignition Upgrade - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-11-2011
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How To: Screamin Demon Ignition Upgrade

Here is how to upgrade your ignition with a Screamin Demon performance coil and Livewires.



These are what we're going to be installing. Their high performance coil and wires.


A nice touch on the wires is they are labeled on both ends so it's easy to determine where the wire needs to go on the coil and on the engine.


The connectors are also very nice and fit very securely.


Here is the stock coil that we're going to remove. It is held on simply by 3 bolts and they thread into the valve cover. There is also one connector that must be disconnected. Disconnect everything and unbolt the coil.


Everything disconnected and coil removed.


With the old coil removed we can compare it to the new Screamin Demon. The old one is noticeably lighter and also a tiny bit smaller.


Now, remove the passengers side wires. They are held in place with clips that push down onto studs. Simply lift the clip up and it slides off of the stud.



After matching them up with the correct length new wires, you need to put the supplied dielectric grease on the connectors on both ends.


Now bolt the new coil back on and attach the passengers side wires.


Make sure they are all firmed press down, you will feel them click into place.


Remove the wires for the drivers side. They also have similar clips on studs.


After matching the lengths, attach them to the plugs.


Attach to the coil in and correct order and you are done. The order varies with different years and different engines, so it is best to either consult a manual or write down the order they were in before you removed the original ones.


The result is improved fuel efficiency, more power, and the engine revs much better than before. Idle is also smoother. Also, you can increase your gap to .065" as recommended by them if you want. This is definitely one of the best bang for the buck modifications to our trucks, especially since and OEM replacement coil is often times more expensive than these.

For more information, click the logo below.

Last edited by 98liftedranger; 11-27-2011 at 11:13 PM.
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Old 01-07-2014
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is this really a big gain ?
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Old 01-07-2014
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On a 3.0 yes definitely. Not too sure on a 4.0

Last edited by 99offroadrngr; 01-07-2014 at 01:42 PM.
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Old 01-12-2014
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Pedro, Does it really help the 3.0L out that much? If so, I am half tempted lol.
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Old 01-13-2014
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Originally Posted by Lazler View Post
Pedro, Does it really help the 3.0L out that much? If so, I am half tempted lol.
yeah it'll be a bit peppier and you'll prob save a little gas.

Do you have a tuner? If not, i'd definitely get one of those as well. Night and day difference on my old truck lol
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Old 01-13-2014
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interested in one if it helps. might help with the supercharger in the spring. gotta do plugs anyways.
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Old 01-05-2017
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I've been thinking about doing this next time i do plugs and wires.. Anyone done this on the 4.0 yet? Those wires are SICK though, it looks really good! what plugs did you end up running with this?
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