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installing xieds?

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Old Aug 13, 2012 | 05:32 PM
  #21  
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TUCCI
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When I put mine on I lost about 3-4 miles to the gallon.
 
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Old Aug 13, 2012 | 07:09 PM
  #22  
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Originally Posted by Port Dawg
Hey guys.....I see a bunch of you with these....are you running with stock headers or are any of you running with an aftermarket header/guttend header.
I have run them with stock header, gutted headers, and aftermarket headers. As long as the 02 sensors are working properly, any of the XiED's will do their job.

More Details HERE

Originally Posted by Pine Tree
OK, I'll ask...

(1) Do you know what part of the map for your bike (or any for that matter) is set for closed loop operation? Do these devices continue to add fuel even under accel enrichment?

(2) How do you know your bike needs an additional 8% of fuel?

(3) Do these devices take into account your particular motor's VE's, timing, or even the quality of fuel?

Just asking...
Answers to #1 & 3 questions are answered HERE

#2-depending on what year bike you have the factory settings are EPA mandated lean by 6%-8% in closed loop. Not so lean to ruin you engine, but too lean to run smoothly or as strong and cool as it could.

Closed loop is where 90%+ of the average riders riding is done.

This is known because you can take any stock EFI bike and put it on a Dyno and put a sniffer in the exhaust and see that it is running around 14.6:1 (which is leaner than ideal).
 
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