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Stock ECM program upgrade

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Old Jun 29, 2006 | 05:40 AM
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abjones
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Default Stock ECM program upgrade

Took my 01 FB in to local HD dealership for a dyno-tune after changing exhaust. Bike was running good when I took it in. After it was put on dyno was called and told PCIII-usb was toast
bike would only run on one cylender with it hooked up, ran fine when PCIII removed.They made it right and bought me a new PCIII installed it and put in canned map. Getting to my original thought while in the shop the tech hooked laptop to ECM and did what he called an upgrade from B program to E program. Can someone explane what this means, and what it will do for the bike.
 
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