New plugs
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Road Captain
Joined: Oct 2007
Posts: 743
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From: Morris, Il
New plugs
Just put v-rod spark plugs in my 08 ultra. I have a 103 with 200 crank pressure. A buddy recommended the v-rod plugs so figue worth a try. Gapped at 40 will let you know if any better performance. I don't think I'll notice but we will see.
Ive ran NGK plugs for a long time with no complains. I was recently given a set of V-Rod HD Plat plugs, the NGKs were a year + old and figured no harm done so they're in now. I got about 200 mi on them, I can't feel any difference so Ill check them later in the year.
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Road Captain
Joined: Oct 2007
Posts: 743
Likes: 0
From: Morris, Il
To prevent spark blowout, but my mechanic recommended 40 and seems to be fine. If issues will decrease to .35
Will check on part number.
Will check on part number.
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
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From: Glendale AZ
I picked up a set of NGK Iridium 6546 (cooler VRod plugs) this morning, if a cooler plug is being used successfully I all over it.
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Intermediate
Joined: Jul 2007
Posts: 32
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I am running the Iridiums as well. Could immediately notice a difference on my 11 ultra limited.
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Road Captain
Joined: Sep 2009
Posts: 551
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From: Toronto, Ontario
Sorry, but there is no way you can "feel" any difference in power by merely changing type of spark plug- unless your old plugs were severely worn or carboned up or something.
I've found it's best to stick to the plain old HD plugs that are meant for your model. This ensures the ion sensing feature (knock sensor) continues to work correctly.
The only advantage of the iridium plugs is that they will last longer before you have to change them, but for me I don't care- I change my plugs every spring or more because they are cheap and very easy to install.
I've found it's best to stick to the plain old HD plugs that are meant for your model. This ensures the ion sensing feature (knock sensor) continues to work correctly.
The only advantage of the iridium plugs is that they will last longer before you have to change them, but for me I don't care- I change my plugs every spring or more because they are cheap and very easy to install.
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