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The $5 worth of Radio Shack resistors that Nightrider sells as the XIEDs. They're not a tuning device, all they do is change the voltage reading from the O2 sensors to add a little fuel in the closed-loop part of the map.
Same thing with Amsoil. Overpriced Mobil 1 oil that is sold with a pyramid scam used shoe salesman theme.
You dont have to change your tune. Here is how you get louder and runnin cooler without breaking the bank, 125 shipped to your door, a couple of beers putting it on. Here is also instructions with pictures and a tool list. After that, fl-xied for your bike, $110 from www.nightrider.com then find a arlen ness big sucker air cleaner on fleabay $110.00 Complete stage 1 for under 450 bucks, you already have slip ons. Good luck man.
If you want bark, just gut the cat or put the Fuel Moto head pipe on. I put that FM head pipe on my ultra, instant bark. I went to the 2013 take off CVO mufflers for a little less sound. I think the 2010 and up mufflers are a little more open due to the quieting effect of the cat, so removing the cat makes a real difference in sound. No tuning required, still getting 42-45 MPG.
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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.
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