Ford Mustang Forum - View Single Post - 2012 Mustang GT Manual - rough idle/revving/stalling
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post #7 of (permalink) Old 12-08-2015
Brenspeed
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Joined: Jul 2005
Location: North Webster
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Previous owner probably returned car to stock with the tuner and kept it. Hence the horrible running condition, buy a calibration and a tuner and be all set! This is a common problem that we run into weekly with used cars and aftermarket parts. We have what you need, call us.
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