X14IED question
#13
09-28-2011 | 11:39 AM
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Joined: Aug 2011
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From: SE Illinois
I have the old style SE spip-ons(race only application) & am planning on putting either the X14iEDs or XiEDs on my bike since I am planning on doing the SE breather upgrade. Nightrider recommends the X14iED for my 07 1200C, but Xied for newer bikes. Not sure which to go with here. I don't plan on doing any other engine upgrades besides the exhaust I already have and the breather. Is the X14iED enough & would the XiED richen the closed loop too much?
#14
09-28-2011 | 11:53 AM
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Joined: Aug 2011
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From: Central Illinois
I have the old style SE spip-ons(race only application) & am planning on putting either the X14iEDs or XiEDs on my bike since I am planning on doing the SE breather upgrade. Nightrider recommends the X14iED for my 07 1200C, but Xied for newer bikes. Not sure which to go with here. I don't plan on doing any other engine upgrades besides the exhaust I already have and the breather. Is the X14iED enough & would the XiED richen the closed loop too much?
For example, this is from a conversation I had with him very recently:
The XiED is proving to be the better choice on the 2010 > later XL's. On the earlier sportsters, I had to limit the closed loop AFR with the X14iED because the AFV (adaptive fuel value) was getting pushed too high and open loop AFR's at high RPM were actually going too rich. So far we are not seeing that on these late model bikes.
But the difference in fuel between 14.0 and 13.8 is the difference between 6% and 8%. That is the correction from 14.6 AFR. Not much at all. Closed loop is under 4500 and under 40% throttle (actually under 80Kpa), but it covers 95+% of average riding. Open loop AFR's are 13.8-12.5, depending upon RPM and engine load, so the engine is actually never at risk of going lean.
The closed loop AFR of 14.6 is stochiometric and technically is not lean. It is just not ideal for an odd fire, v-twin engine with a common plenum intake manifold. I can point out many reasons why the engine is both hot and has a few runtime issues. Most of these issues go away as soon as the AFR gets to 14.2:1. And surprisingly, the engine would actually meet a static tailpipe test in virtually every state except California. I have circumstantial evidence that it would meet most EPA testing, but I believe it can rapidly fall out of NOx emissions with aftermarket mufflers. But HD has to test across its fleet.
#16
09-28-2011 | 12:08 PM
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From: SE Illinois
#17
09-28-2011 | 12:26 PM
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Joined: Aug 2011
Posts: 2,095
Likes: 11
From: Central Illinois
No, to my knowledge the XL models do not have cats in the pipes, which is one reason why you never hear about heat complaints on these bikes.
#18
09-28-2011 | 01:56 PM
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Joined: Aug 2011
Posts: 2,325
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From: SE Illinois
That makes sense. Think if I ever buy a Dyna that will be the first thing I do...replace the full exhaust system, then programmer & breather.
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