Request: 1998-2000 CA Spec 1MZ M/Ts

[91MR2quickNA]

If anyone has a 1998-2000 CA spec, stock 1MZ w/ MT, could you tell me if they use 2 pre-cats, one on the front exhaust manifold, the other on the rear y-pipe, and if they use A/F ratio sensors, NOT heated O2 sensors? If you unplug an A/F ratio sensor, it'll immediately throw a CEL, but not so with a regular heated O2 sensor.

I need to know before I take my V6 MR2 to the referee station because the Toyota service manual for a 2001 Solara only lists the pre-cats for A/T models. So, if they tell me I need 3 cats, I can show them the OEM service manual and say that the M/T only requires 1 main cat. The factory manual also shows the V6 M/T as using heated O2 sensors, but we recently encountered a 2000 ECU that was switched to a M/T using the ECU ground switch and it was still looking for A/F ratio sensors.