Question about XIEDs
For '07 and later, it's not a requirement...the ECM will adjust. You'll still operate at the same air/fuel ratio though (excessively hot). XIEDs will help you run a bit richer and will cool things down a bit.
Seasoned HDF Member
Joined: Jan 2008
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From: SW OH.
The stage 1 download will raise your rpm limiter from 5500 rpm to 6250 rpm and add extra fuel at the wide open throttle position to take advantage of the increased airflow (more hp). At less than wot ,the lean 14.7 can not be altered by hd (epa compliant).XIED'S richen the mixture at less than wot which is where most of our riding is done.I think they are a good thing if you don't want to do the sert(or whatever) and dyno tune thing.
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Road Warrior
Joined: Dec 2008
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From: Upstate, SC
Ultimate HDF Member
Joined: Oct 2007
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From: Palm Harbor fl.
If you don't want to give up any gas mileage and don't mind the way an EPA bike runs then don'f buy them. But if you are like me and want your bike to run like it was designed to run get the 13.8s. I had just sent my 14.0s back so I could try the 13.8s and one of the mechanics drove it and when he came back he thought it had cams or at least a dyno tune. My bike runs great with the V&H slipons, SE Stage 1 AC and the 13.8 XIEDS being my only mods.
inthered
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LawDuck
Dyna Glide Models
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