Spar Plug Wire Replacement
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Club Member
Joined: Oct 2006
Posts: 1,582
Likes: 72
From: North East
Spar Plug Wire Replacement
I recently read on a "Harley online parts dealer" website that changing your stock spark plug wires to SE spark plug wires requires ECM re-calibration. Never heard that one before. Anybody?
Road Warrior
Joined: Apr 2010
Posts: 1,542
Likes: 5
From: Cleveland, OH
I call BS. You are still burning the same air:fuel ratio. With the stock ignition, I believe any change in wires is more cosmetic than anything. I changed them on my FLD, and didn't notice even the slightest bit of difference other than the red wires looked better than the thin black ones.
Road Master
Joined: Mar 2010
Posts: 934
Likes: 54
From: SE Wisconsin
I did hear something like this before.
Has something to do with the ECM watching the resistance of the plugs as it relates to pinging.
The stock wires and plugs have a predetermined resistance build into the equation.
Has something to do with the ECM watching the resistance of the plugs as it relates to pinging.
The stock wires and plugs have a predetermined resistance build into the equation.
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
Likes: 55
From: Bay Area
Yup! Agree
That's what the local indy told me.
Road Master
Joined: Mar 2013
Posts: 1,151
Likes: 14
From: Seattle
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