response by motronic to cat delete with o2 sensor
 

Hello- If you have an 86 3.2 motronic managed engine with a cat delete pipe but with an o2 sensor-what is the response to the o2 sensor readings? I am wondering - will the motronic will adjust to the readings by altering injection timing or by going leaner or richer? If you run for an extended period with this setup-is there a downside? Thanks in advance.

I'm no expert but the o2 sensor is before the cat so why would there be any difference?

This is the correct answer. Since the OXS is before the cat, having or not having a cat won't make any difference to the ECU.

Thanks for the answers!