Im using the split fire plugs in my lowrider02 much improved all round performance great on gas mileage
HD Performance Spark Plugs
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Road Master
Joined: Jul 2007
Posts: 791
Likes: 1
From: New Hampshire
HD Performance Spark Plugs
Anyone know if the HD Triple Platinum Performance Plugs come pre-gapped?
These are configured and designed (likely by SplitFire) to enhance fuel economy, increase hp, and produce a more steady idle.
I had a set of these in my Honda Accord that made a huge enough difference that I would not have believed if I had not seen it for myself. They delivered on every promise.
If they can do that for a steady, 4 cyl, automobilemotor, I'll bet they could only enhance the TC96 on my Dyna.
Have not gapped a plug since many years ago. I assume these are set to install right out of the box...
These are configured and designed (likely by SplitFire) to enhance fuel economy, increase hp, and produce a more steady idle.
I had a set of these in my Honda Accord that made a huge enough difference that I would not have believed if I had not seen it for myself. They delivered on every promise.
If they can do that for a steady, 4 cyl, automobilemotor, I'll bet they could only enhance the TC96 on my Dyna.
Have not gapped a plug since many years ago. I assume these are set to install right out of the box...
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,299
Likes: 2
From: By the "Betty water and the Wire"
RE: HD Performance Spark Plugs
They might be "supposed" to be pre-gapped, but I'd double check 'em, justfor piece of mind. No telling what kind of handling they went thru to get to the stealer's. You know what's recommended by the MoCo? Have tolook up my manual to see the proper gap.
Intermediate
Joined: Sep 2007
Posts: 30
Likes: 0
RE: HD Performance Spark Plugs
Yes, they do come with a pre gap. (Although it never hurts to double check) I use the Screamin' Eagle plugs in my 08' Dyna as well as my 99' Sportster. The engine will run a bit smoother, fuel mileage will go up a tad, and you will also fell a slight perfomance increase.
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Road Master
Joined: Jul 2006
Posts: 754
Likes: 2
From: New Bern, NC
RE: HD Performance Spark Plugs
I put a set in my scoot and checked the gap, 0.042. Runs just fine, fires right up. Want to get a set of yellow plug wires, precut, with the black boots. Not seen any for the fuel injection ignition yet. I've seen the yellow with yellow boots, but I don't like those.
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Banned
Joined: Jun 2007
Posts: 5,431
Likes: 0
From: Elizabethtown, Pa
RE: HD Performance Spark Plugs
I'm using the SE tripple platinum plugs & SE 8mm plug wires on my 07 Streetbob and I'm happy with both. Plugs came pre-gapped but I checked 'em anyway. Bike starts easier too.