Screamin' Demon Coil - Page 2 - MustangForums.com



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Old 06-05-2012, 06:14 PM   #11
Shelby350Mike
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So, my friend put the coil in their 3.9 today... (its a 2004) And well, HOLY CRAP there is a huge difference... Amazing. Its great.
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Old 06-05-2012, 10:05 PM   #12
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I personally bought the screaming demon pack with their live wires and the wider gap as recommended and personally I didn't feel any gain, in fact I wondered if it would miss on occasion, it didn't smooth my idle or anything they promise it cost me around 220 (100 pack, 80 wires and 40 plugs) and then an additional 40 for new stock gaped plugs and time to put the stock pack back on..
Idk about the 04 model but on our 4.0 I say DONT DO IT coulda saved me $180 plus the time I wasted.
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Old 06-05-2012, 10:28 PM   #13
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Quote:
Originally Posted by Shelby350Mike View Post
Ok, will the Demon Coil have any affect on my car's performance? Or are they just blowing smoke at me about this coil actually being a power booster?

(With the coil, I'd upgrade wires and plugs too)

My friend swears it will make a difference, but he had a '99 4.6L...

Thanks.
unless you have supercharger as i was advised
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Old 06-06-2012, 09:12 AM   #14
Shelby350Mike
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I just put the coil, taylor wires, and regaped my current plugs. And I couldn't be happier. For one, there is improved throttle response, and my car pulls more in third gear now. Also, there was extreme drone with my Pypes Dual Exhaust system from 1000-3000 RPM, and the drone is completely gone. I only heard it last night going up a fairly steep hill.
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Old 06-09-2012, 09:56 AM   #15
157dB
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Quote:
Originally Posted by Nuke View Post
157db, are the OE wires that bad or do you mean that over time they will degrade?
According to the O-Scope, the 4 year old OEMs were just
loosing their ability to deliver the full spark to the plug.
The outer jackets are cracking and are just good enough
to live thru the 3 year warranty period. Period.

I am still looking for a replacement candidate.
They will not be of the 'spiral core' design.
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Old 06-10-2012, 12:37 PM   #16
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I cant imagine how on gods green earth the electrical influences exhaust note... I dont buy it. Period.
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Old 06-11-2012, 08:54 AM   #17
Shelby350Mike
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Hey, I didn't buy it at first either, but the drone is legitimately gone now. I put the coil on, wires, and opened the gaps on the plugs. So that means a more efficient spark and burn, right? Which means a slight power increase and better throttle response, so therefore, it makes sense with an increased power curve that the exhaust note changed.
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Old 06-12-2012, 04:05 PM   #18
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Quote:
Originally Posted by stags View Post
I cant imagine how on gods green earth the electrical influences exhaust note... I dont buy it. Period.
Foolish me, the drone was soo bad on my borla stingers, I put resonators on, then ripped out the entire interior and trunk and dynamatted, still drone... all I had to do was change the coil and plug wires.. .hahaha! (ends sarcasm)
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Old 06-12-2012, 08:41 PM   #19
Shelby350Mike
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I'm not being a smart guy here, it legitimately got rid of the drone I had.
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