4.6L oxygen sensors

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06-28-2021, 07:49 AM
Jaguar Engineer

4.6L oxygen sensors

I’m using a 4.6L 2v donor engine. I plan on doing a cat delete program. Which O2 sensor do I need to retain upstream or downstream?
06-28-2021, 07:58 AM
weendoggy

Upstream. You can "fool" the after cat one, it verifies the upstream working.

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