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mass air
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  1. Late Model EFI Techboard
    I have a 1991 F150 302 4x4 with the AOD tranny, did the mass air swap with a 92 C3W mustang computer. Speedo worked fine before swap, now it is not functioning at all. So far all i can think of is that i need to change out the original VSS with a 92 mustang. Used a 93 mustang harness, that I...
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