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Cat feed gas and rear O2 readings 03 Matrix
Posted to Technical Discussion Forum on 6/28/2004 8 Replies

With this vehicle on a dyno I tought now would be a good time to revisit this issue. [2003 Toyota Matrix, O2S Scandata] Notice the post cat HO2s voltage. Apparently this vehicle deliberately dither the air fuel ratio some. The cycle takes about one minute. Pre... Login to read more.

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