I agree. Your O2 sensors must be hooked up. There is no way around it. Even the guys who convert their 60's Stangs to EFI need O2 sensors. Every vehicle with a Electronicaly controlled Conputer system needs O2 sensors. The O2 sensors send a signal back to the CPU which tells the CPU to adjust air/fuel ratio to the optimum 13.7/1 ratio. This ratio is considered a perfect condition (or as close to perfect as you can get). Without the O2 sensors you are running either very lean or very rich. Evidence of this should be seen on your plugs.
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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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