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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
I never said I was running lean on the topend, but at 30psi with 24# injectors I was 13-1 air/fuel and with the nitrous set at 35psi the A/F was at 11.5-1