Question about 2003 Harley Davidson XL 53 C Sportster Custom 53

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2007 Sportster Coil

I need some advice on a high performance coil, other than stock. The Screamin Eagle one does not say if it is for EFI models, or even if that matters. I don't know. I would like to upgrade to a higher voltage coil, to get more bang from my spark. Any help would be appreciated. Thanks!!!

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The stock coil is fine for stage 1 motors, once you go cams and high compression then you start to need better voltage and faster generation of spark. Using a performance coil on a stock bike will just cost you in plugs as you also need to upgrade your plugs to deal with the higher loads, the stock plug will cope it will just erode the electrode faster. on my metric motor i was going thru plugs every service (3000miles) and there were scrap not even good enough for running the lawn mower i was running Dyna Micro coils, 10mm thundervolt 50 leads, and either split fire (lasted 6000miles) or autolite plugs (3500miles)

Posted on Nov 20, 2008

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