Quote:
Originally Posted by David.X5
I've been told that post-cat O2 sensors are not part of the loop controlling engine performance, but instead are used to determine the health of the cat system. So if this theory is correct, it may throw a code, but the post-cat O2 shouldn't cause poor performance.
See for example - 12v Pages - The Engine - How it Works
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You are correct.
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2002 X5 4.6is
1999 C5 Corvette
1992 Mitsubishi 3000GT VR-4
1994 Kawasaki ZX-9R
2005 Mazda 6 Wagon (Wife's)
1991 Mitsubishi 3000GT VR-4
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