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Extra Fire Power kit for the 3.8L

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Old Aug 15, 2012 | 05:44 PM
  #21  
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Originally Posted by Dronac
Iv seen someone else raving about the screaming demon kit on here. I'll be looking forward to seeing results myself.
Mine is arriving on 15-Aug via UPS, so I will stick it under the hood over the weekend :-)
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Old Aug 15, 2012 | 05:49 PM
  #22  
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Originally Posted by JKingAround
I hear you on that it could go the way of E3s. Just with out the problems of E3s. For 180 bucks for the coil and wires it's worth the try. A engine needs spark fuel and air. With the bigger gap from a .5 to a .65 on the plug it burns the fuel faster and gives a better response. Unlike E3s they do use products like this in race applications.
10% gain on 1000 hp is 100 horses, 10% gain on 200hp is 20 horses. Makes a huge difference on race engines or highly tuned engines.

Also, if the main problem this overcomes is worn out equipment then you will be spending the $200 every year or so to maintain the performance.

I know it looks like I am hating on this product, just don't see any sort of actual proof that it does anything that a regular tuneup wouldn't do.

Last edited by jeepin_tiger; Aug 15, 2012 at 06:12 PM.
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Old Aug 15, 2012 | 06:08 PM
  #23  
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Originally Posted by jeepin_tiger
10% gain on 1000 hp is 100 horses, 10% gain on 200hp is 2 horses.
That would be 20 horses, not 2.
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Old Aug 15, 2012 | 06:12 PM
  #24  
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Originally Posted by TheTerminator
That would be 20 horses, not 2.
my bad, correction made
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Old Aug 15, 2012 | 08:38 PM
  #25  
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Once you replace the coil you wouldn't need to replace it the wires is 100 bucks and OEM wires are about 50 bucks so it's not much of an increase. It might increase peak horse and torque but just move it earlier in the band would be fine with me.
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Old Oct 12, 2013 | 10:56 PM
  #26  
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any updates on the coil and wires? thinking of purchasing in the near future
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Old Oct 12, 2013 | 11:10 PM
  #27  
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Ya bump. Not that im looking for hp but i would like to tune up my jeep soon.
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Old Oct 13, 2013 | 04:04 AM
  #28  
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Interesting !!!!
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Old Oct 13, 2013 | 06:39 AM
  #29  
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Originally Posted by courtsm3
Ya bump. Not that im looking for hp but i would like to tune up my jeep soon.
Don't lie....we're guys.....we're always looking for more hp lol

Sent from my obama listening device
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Old Mar 2, 2014 | 05:40 AM
  #30  
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I have 129,000 on my '09 JK and needed to replace the wires. This wire set is top shelf. custom length, factory crimps, numbered, high temp covering, look good, should easily last another 100+

I also replaced the plugs with Autolite double platinum and gapped them to .065 as directed to do in the coil pack instructions.

After 3 tanks of fuel I see no improvement in fuel economy. I run a 4" rancho lift and 35" KM2's so 15 is about as good as I can get in everyday driving. So far there is no improvement on that number.

Additionally there is no "seat of the pants" detectable improvement in performance.

If you need wires I would highly recommend these wires. They are only about $20 more than the Mopar set and they are well worth the money.

I cannot recommend the coil pack unless possibly you have a bad coil and need to replace it anyway.
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