Ford Mustang Forum - View Single Post - Air/fuel ratio spiking in a new Mustang, sometimes losing power.
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post #33 of (permalink) Old 02-14-2016
Clean14's Avatar
Joined: Feb 2015
Location: Baytown
Posts: 7
I just had a set of JBA headers and off road X pipe installed on a 2014 Mustang GT 5.0. Since then, my air/fuel ratio is in constant oscillation. I don't have O2 extensions. This even has several tuners puzzled. Any ideas?
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