Running lean, hesitation. - Ford Mustang Forums : Mustang Forum
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post #1 of 2 Old 04-09-2017, 04:36 PM Thread Starter
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Running lean, hesitation.

I put my old 347 stroker: TFS 185 heads, 75mm TB, 50# inj/MAF, Kooks 1 7/8 Headers, on a 1992 manual Fox. I had these engine on a track car with S1 Vortech SC. Pro M EFI comp. Worked great. Now: All stock comp with stock O2s. Air/fuel guage shows all the way lean at idle, hesitates when accelerating and pops. Poor power. Any suggestions?

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post #2 of 2 Old 04-09-2017, 07:20 PM
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Stock computer with 50lb injectors with no chip or tune?

1988 GT, 57k mi, Orig Owner
ProCharger P600B, FRPP Headers, Flowmaster F2, 3G Alt, Mk8 Fan/DCC, 3.55's, Prog Springs, ST Brace, G/Trac Bar, Subfrms, UCA, LCA, FCA, Tokico 5-ways, C/C Plates, CSA 16x8, Bridgestone RE760 Sport 225/50R16, Megasquirt DIYPNPF60, LC2 WBO2, C&L76mm MAF w/LU47's
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