changing spark plug wires
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Joined: Apr 2005
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changing spark plug wires
I have a 2015 ultra limited. I had the stage 1 put on. I read upgrading spark plug wires with low resistant ones would also help. I was thinking of getting the screaming eagle wires. Would they help? My question: I went down to try to get the original wires off. It obviously wasn't hard to take off of the spark plug, BUT the other end does not just pull out. Is there a trick to getting it out?? Any thoughts would be appreciated.
Seasoned HDF Member
Joined: Jun 2012
Posts: 6,154
Likes: 2,562
From: CT/FL
I can't say from personal experience but I've read that the stock wires are the only ones that work on late model bikes because the coils read the wire/spark plug resistance to verify spark. If you change wire resistance it can set a fault code.
Club Member
Joined: Apr 2013
Posts: 7,681
Likes: 8,413
From: Utah
This thread ran several years ago but will give you an understanding of ION Sense
https://www.hdforums.com/forum/engin...explained.html
https://www.hdforums.com/forum/engin...explained.html
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
look up "ion sense".
some riders have have CEL with aftermarket and screaming eahle wires/plugs.
the stock stuff works fine.
the only time a "performance" plug wire add power is if the old wires are worn cracked split and about useless.
mike
some riders have have CEL with aftermarket and screaming eahle wires/plugs.
the stock stuff works fine.
the only time a "performance" plug wire add power is if the old wires are worn cracked split and about useless.
mike
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
The stock wires (in good condition) are providing all the performance your bike can use at this point.
Anything other than the stock wires, would be cosmetic only (colored wires).
Road Master
Joined: Jan 2008
Posts: 921
Likes: 8
From: Junction City, Kansas
I installed the Fuel Moto wires on my 15 RGS because they were red and look cool on my black bike. You won't gain any performance from spark plug wires unless one of your old wires are bad. I had to remove the gas tank to replace the wires but other than that it's pretty easy.
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Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
The Screaming Eagle wires will work fine and the ION sensing will still work just fine as will the Fuel Moto wires. There will be no improvement unless your stock wires are not up to par, as stated previously. My SE wires have been on for 4+ years and been on a dyno 4 times where any spark issues, either false readings or failure to read, would have shown up.
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Road Warrior
Joined: Nov 2014
Posts: 1,962
Likes: 140
From: NY
Thats true that newer gen bike could throw a code if using much lower resistance type spiral core high perf wire plug wires let alone other plugs of diff design etc then stock that may also have different resistance .
Scott
Road Warrior
Joined: Jun 2009
Posts: 1,724
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From: ORYGON
I have a 2015 ultra limited. I had the stage 1 put on. I read upgrading spark plug wires with low resistant ones would also help. I was thinking of getting the screaming eagle wires. Would they help? My question: I went down to try to get the original wires off. It obviously wasn't hard to take off of the spark plug, BUT the other end does not just pull out. Is there a trick to getting it out?? Any thoughts would be appreciated.