Aftermarket coil on plug kits. Worth the hype? - Mustang Evolution

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Old 01-09-2016, 09:32 PM   #1
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Question Aftermarket coil on plug kits. Worth the hype?

My 2004 GT has 136K on the motor, and all the coils are still the factory units. I've thought of upgrading the coils, but ended up throwing money at other mods (more expensive ones) last year, gaining some impressive results. Right before I purchased my car the previous owner installed a fresh set of Motorcraft spark plugs. Car has no issues with misfires, or running rough. I've been looking at the MSD Street Fire Coils Part #55128...

http://www.summitracing.com/parts/msd-55128

Would these be a worth wild upgrade? What is everyone running for coils on your 2V motors?
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Old 01-09-2016, 09:45 PM   #2
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Originally Posted by phatspeed7x View Post
My 2004 GT has 136K on the motor, and all the coils are still the factory units. I've thought of upgrading the coils, but ended up throwing money at other mods (more expensive ones) last year, gaining some impressive results. Right before I purchased my car the previous owner installed a fresh set of Motorcraft spark plugs. Car has no issues with misfires, or running rough. I've been looking at the MSD Street Fire Coils Part #55128...

http://www.summitracing.com/parts/msd-55128

Would these be a worth wild upgrade? What is everyone running for coils on your 2V motors?
Most of us run the factory Motorcraft coils, due to their reliability.
There is absolutely no performance advantage to using aftermarket coils. And they have proven to be less reliable than the factory coils.
Rockauto seems to have the best price on Motorcraft coils.
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Old 01-09-2016, 09:51 PM   #3
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Most of us run the factory Motorcraft coils, due to their reliability.
There is absolutely no performance advantage to using aftermarket coils. And they have proven to be less reliable than the factory coils.
Rockauto seems to have the best price on Motorcraft coils.
This is what I thought. Even after seeing American Muscles video on the Accel coil packs. There was a little power gain in the curve itself, but nothing up top. In fact they actually lost 1HP at the peak power band. Since my OEM coils are still kicking, just run them.
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Old 01-09-2016, 10:07 PM   #4
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Aftermarket coils are a waste of money. Yet more snake oil brought to you by the aftermarket.

Just change your plugs and then do these.

Amazon.com: Prenco Coil on Plug Boot Kit (36-202508): Automotive

These kits are literally like doing the "wires" on 99+ vehicles. The spring and boot is what fails in a COP the majority of the time, not the electronic part. I've got 140k miles on original OEM coils on my Expy with boots and springs done 10k ago with new APP104s and it purrs.
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Old 01-09-2016, 10:11 PM   #5
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Yes, the only advantage to aftermarket coils is that they are typically less expensive, than OEM.

I'll post a fresh Rockauto 5% discount code in the General Mustang forum later tonight, in case you want to purchase coils from them.
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Old 01-09-2016, 10:40 PM   #6
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I got a free set when I bought my engine lol. $575 for a 39k PI motor out of a Marquis. Coils were still on it. Right into a big ziploc those went.
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Old 01-09-2016, 11:05 PM   #7
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Yes, the only advantage to aftermarket coils is that they are typically less expensive, than OEM.

I'll post a fresh Rockauto 5% discount code in the General Mustang forum later tonight, in case you want to purchase coils from them.
When I worked at Ford the oem coils Motorcraft DG508 were retail $75.75 each. Think cost on them was around $45 each. Sold plenty for the F-series.

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Old 01-09-2016, 11:13 PM   #8
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I got a free set when I bought my engine lol. $575 for a 39k PI motor out of a Marquis. Coils were still on it. Right into a big ziploc those went.
Lol.
That was worth half of the price of the engine right there!
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Old 01-09-2016, 11:15 PM   #9
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When I worked at Ford the oem coils Motorcraft DG508 were retail $75.75 each. Think cost on them was around $45 each. Sold plenty for the F-series.

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I think that they are about $45 each from Rockauto.
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Old 01-10-2016, 12:11 AM   #10
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Go with oem coils. I bought the MSD coils and so far 1 failed me within a month.

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Old 01-10-2016, 11:39 AM   #11
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Super cobra jets run stock coils. That's good enough for me.
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Old 01-10-2016, 11:56 AM   #12
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Super cobra jets run stock coils. That's good enough for me.
Super cobra jet and stock don't belong in the same sentence. Lol

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Old 01-10-2016, 12:44 PM   #13
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Super cobra jet uses mostly stock components including the coils.
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Old 01-12-2016, 08:52 AM   #14
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ACCEL/MSD Inside Info

I worked for ACCEL Performance Group for 18 months in sales at the CLE HQ, just enough time for it to change hands twice, bought by two different private equity groups (owned MSD and Holley)...but that is another story!

The 2 valve factory coil had a design flaw which allowed moisture to get to the internal wire windings, a big art of the growth in aftermarket COPs like the 140032 ACCEL coils grew out of this issue.

Based on what I saw in testing and from first hand experience, the 140032-8 (8 pack) at around $200 on the web is a great cost effective alternative to OE coils. They do provide a bit more spark energy but mostly they address the design flaw.

ACCEL did a test at Norwalk with several Mustangs over one year ago and the results were favorable. If I come across the video I will post it.

As far as the 3V and Coyote go, those factory coils are as good as aftermarket. I put MSD blaster coils on my 06 GT because I got a set for free to "test" before I left. I changed the spark plus to address the two piece design concern as well. The coils do look nice!

Hope this helps!
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