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IMHO, there's no substitute for a good dyno tune. I'd find out where a good dyno wrench is near you and call the cat up that does the tune and see what he likes. The guy that does mine prefers SERT/SEST and he doesn't sell them (but he does sell PC products). If you can find a good, honest wrench they'll not steer ya wrong.
I don't like going with the SERT becease it gets mated to the bike which I think is a BS move on Harley's part but whatever. I'll end up dropping the coin on my next bike for it as well probably as long as Bobby is still doing the tunes.
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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.
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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.
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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.