Xied's
Road Warrior
Joined: Dec 2008
Posts: 1,530
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From: Upstate, SC
That's what they are for. They richen the mixture in closed loop mode, so if you're running a hi-flow AC you still need the download, which richens the mixture in open loop.
Road Warrior
Joined: Apr 2009
Posts: 1,360
Likes: 4
The nightrider site has some pretty good writeups ( http://www.nightrider.com/parts/ied_faq.htm ). There are several different XiED type models, some adjustable some not. They change the voltage the ECU sees from the O2 sensors, so the ECU thinks the bike is running leaner than it really is and therefore the bike runs a bit richer, but only in closed loop which part throttle and cruising. It does nothing for WOT or idle (typically open loop). So the XiED in combo with a simple fueler can be a good setup.
There are always exceptions, but if your bike runs fine, then it should run cooler and better with the XiED. I used mine for a couple thousand miles but it did nothing for the minor but annoying surging and decel pop. I had to go to something more sophisticated to fix that. The XiEDs certainly cooled the bike (elliminated the hot seat) and knocked 5mpg off, however. Now they are sitting on the shelf.
There are always exceptions, but if your bike runs fine, then it should run cooler and better with the XiED. I used mine for a couple thousand miles but it did nothing for the minor but annoying surging and decel pop. I had to go to something more sophisticated to fix that. The XiEDs certainly cooled the bike (elliminated the hot seat) and knocked 5mpg off, however. Now they are sitting on the shelf.
Last edited by ColdCase; Sep 3, 2009 at 09:53 AM.
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 251
From: Connecticut
They are two harnesses. For HDs with oxygen sensors in the exhaust pipes. They have a potentiometer built into the harness that is adjustable. These trick the engine ECM into thinking you are about 10,000 feet or whatever and the ECM richens the fuel and give a smoother throttle, but the biggest plus is it knocks the heat off the engine like crazy. Since you don't look like you work for Uncle, I guess in a nutshell I can tell you it defeats EPA regulations as far as tailpipe emissions go. Even with the fuel injected engine like mine, it feels like a well tuned carb without the fuss of chokes and all that we dealt with before.
I rode to San Diego, a 240 mile trip for me and the weather going was nice and cool as I went by the ocean, so it was not much of a test there, but returning I rode a bit longer way of the desert route. I was in 100+ temps and one good sized mountain. The bike ran fantastic and the few times I stopped and put my hands near the exhaust, I could tell by the seat of my pants that it was much cooler than before XiEDs.
There is a website called Night Rider, you can read up what he has there and if he has a set up for your application and the cost. I paid $110 for mine plus shipping, but he gives discounts to military etc. Do a search, I don't have the exact address.
I rode to San Diego, a 240 mile trip for me and the weather going was nice and cool as I went by the ocean, so it was not much of a test there, but returning I rode a bit longer way of the desert route. I was in 100+ temps and one good sized mountain. The bike ran fantastic and the few times I stopped and put my hands near the exhaust, I could tell by the seat of my pants that it was much cooler than before XiEDs.
There is a website called Night Rider, you can read up what he has there and if he has a set up for your application and the cost. I paid $110 for mine plus shipping, but he gives discounts to military etc. Do a search, I don't have the exact address.
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