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Nope...I never even fooled with anything but Moco branded plugs until my motor guy who is a 30 year HD dealership high faluttin' Uber motor guy claimed that indexed autolights were the way to go with the high compression in my motor....So he used some little discs to get the electrode lined up just right with the incoming fuel yada..yada..yada.. Maybe I gained .000003 HP? It didnt cost any extra and those High Faluters are awfully proud of their builds and eagerly await what they Dynoed at.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.