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Old 09-26-2015, 05:00 PM   #6
steved0x
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Quote:
Originally Posted by jb92563 View Post
I take it the upstream O2 sensor voltage would be the nearly constant voltage and the downstream following the sine wave?
Upstream following the sine wave and downstream nearly constant. If downstream is a sine wave too then the cats aren't doing the job. I think there are lots of good graphs and info in the thread jager linked.

Steve
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