Ford Mustang Forum - View Single Post - Air/fuel ratio spiking in a new Mustang, sometimes losing power.
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post #19 of (permalink) Old 02-05-2013
Terminator2
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Joined: Nov 2012
Location: Lecanto
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Quote:
Originally Posted by JeffCO. Coyote View Post
I looked the other day at my afr gauge (premium) and I ran my car through the gears. It never seemed to drop lower than 13.8-14.1. Is this possibly because my car was built dec 17th supposedly after the pcm update?
Mine drops to the commanded 0.82 PE lambda (~12.0-12.2 A/F) on my 2013 at WOT. I am self tuned though.
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