Sparkplug pics...before & after PC-V
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Road Master
Joined: Jul 2006
Posts: 1,132
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From: MO
Sparkplug pics...before & after PC-V
Here are the stock Champions with 2,500 mi. on them, stock intake, tuning, and V&H Short Shots, being babied. I did run a half tank of Seafoam around 2,000.
...and here are the NGK Iridiums with 2,500 mi. on them after intake and PC-V with Fuel Moto MAP, riding the **** out of it. It has slight decel pop, but I don't mind and it's WAY better at operating temp. I think it's still lean and once the summer heat came on it started occasionally pinging lightly at 3/4+ throttle getting on it, 1 up but much worse 2 up. I run 91-92 octane name brand only, but most of it is corn likker. I bet it wouldn't do it on 92 oct BP white gas, but I'll have to try it out on the next tank.
...and here are the NGK Iridiums with 2,500 mi. on them after intake and PC-V with Fuel Moto MAP, riding the **** out of it. It has slight decel pop, but I don't mind and it's WAY better at operating temp. I think it's still lean and once the summer heat came on it started occasionally pinging lightly at 3/4+ throttle getting on it, 1 up but much worse 2 up. I run 91-92 octane name brand only, but most of it is corn likker. I bet it wouldn't do it on 92 oct BP white gas, but I'll have to try it out on the next tank.
Last edited by Jackal; Aug 17, 2012 at 10:19 PM.
Cruiser
Joined: Feb 2012
Posts: 176
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From: Paignton Devon
i thought champions where for lawnmowers 
but the NGKs do look better with the tune. ive been curious about changing my plugs since I've bought mine. This side of the pond we can run 99ron at shell and 102 from bp would be interesting too see how they faired after 2500 miles or so.
but the NGKs do look better with the tune. ive been curious about changing my plugs since I've bought mine. This side of the pond we can run 99ron at shell and 102 from bp would be interesting too see how they faired after 2500 miles or so.
Intermediate
Joined: Jul 2012
Posts: 41
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From: Virginia
Thanks for posting. I just changed my spark plugs out. The bike is an 02 and had 1800 miles on it. Checked the plugs, and they were black as hell. Keeping tabs on the new ones. So far so good. They're stock Harley plugs.
I didn't know BP sold better gas. Imma have to go check them out. Got one a few miles down the road.
I didn't know BP sold better gas. Imma have to go check them out. Got one a few miles down the road.
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Road Master
Joined: Jul 2006
Posts: 1,132
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From: MO
Thats the story around here anyway...everyone else around here only has 91. Even at 92, most of it is ethnol blend, but for $.25 more per gal. a few have the good stuff. All of my vehicles run high octane thanks to advanced timing.
Yea Im not a fan of the Champs...from previous owner.
Your OD Nighty is lookin good man.
Yea Im not a fan of the Champs...from previous owner.
Your OD Nighty is lookin good man.
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Road Master
Joined: Jul 2006
Posts: 1,132
Likes: 1
From: MO
It was pinging something fierce the other day so I finally emailed FM about a MAP tweak and after running theirs and 3 of my own based on their changes and running the hell out of it, I got me a nice tune now and no pinging. Was fun as hell too. No idea what it did to my mpg yet though.
Advanced
Joined: Jun 2012
Posts: 57
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From: San Diego, CA
i read on either here or xlforums the standard harley plugs are rebranded champions.
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Cruiser
Joined: Feb 2012
Posts: 218
Likes: 1
From: WI
i read on either here or xlforums the standard harley plugs are rebranded champions.
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