By the way..I figured out why my car was running rich. My EGR valve was frozen closed. Didn't operate at all. Never threw a single check engine light either. F*cking Fords.  Lol but anyways, $80 later, the car runs like a DREAM. Still a TAD rich though so I'm gonna do the gauge thing anyways. Just a good reference point.
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'91 Mustang GT 5.0 AOD Daily Driver
Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI
13.73 at 103.8, ~2.2 60'
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