What determines the type of 02 sensor the ECU uses? Is it the wiring or the PROM on the ECU? According to the fuel system info, it looks like it's the wiring.
Can an 87 Turbo ECU simply be reprogrammed (Jim Wolf or NISTUNE) to accommodate for a Zirconium O2 Sensor?
If you wanted to switch sensors to accommodate a 86-89T ECU, the wiring in the engine wiring harness would need to be changed, as well as the oxygen sensor bung (Titania are 17MM and Zirconium are 22MM).
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