Hmm....well my idle is pretty good, it only bounces by like 50 rpms max. Once I put the car in gear, the idle smooths out considerably, which is contrary to a vacuum leak...the idle doesn't rocket up either. It's got brand new injectors...19 lb-ers....but the MAF is still the original. It's not throwing any codes or anything so I'd hate to replace it because they're so damn expensive.
Are Ford MAF's like GM MAF's in that the car will still run if you disconnect it? With GM MAF's, a test to see if the MAF is crap is if you disconnect it, generally the car will idle better or stop stalling, etc.
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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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