Join Date: Nov 2006
Location: Travis AFB
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I was doing some more research, this time i'm looking to get an a/f gage, and came across something that confused me. Hopefully someone here can clarify this for me.
Here is the linkAEM's Installation manual
Within this manual, at the bottom of the second paragraph, is a sentence that says:
"These sensors were designed for operating closed loop around the stoichiometric AFR (14.64 for gasoline), and for performance tuning they are useless."
The part that caught my attention is the, "...for performance tuning they are useless."
I dont understand what their use is then. Can anyone explain what this sentence is saying that might make me think that purchasing this product has a useful purpose?
The reason i ask is because in my recent search for information regarding gages, a UTEC, and general tuning info, i remember reading accounts of people tuning on the street by datalogging and by just shouting out RPM increments and having a partner write what the a/f gage says at that time. This seems to have been a waste of time for these people after having read this manual. Then again i dont actually understand what this manual is saying in this instance so i could be wrong entirely.
Could someone please explain this to a layman?
Thanks, BTW i have another acronym for that list...Universal Exhaust Gas Oxygen (UEGO) sensor
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