Maybe this can be helpful...when I was building my car I read an article on a swap in an older mustang to a EFI 302. Obviously they needed to hook up a computer and the article stated that of all the sensors you could ignore, the O2 sensors aren't one of them. I thimk they said you can even skip the PCV but i do remember them saying you have to install the O2 sensors and the MAF. I agree with Chris in that you need to have some O2 sensors if the car is on the street. But the TFI mod is a possibility and it's free so there's no excuse to have it checked. Keep trying. You'll get it.
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Red 1993 GT Street Machine
Best E.T. - 12.41/Best MPH = 108
Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more
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