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O-2 Sensor add-on in HX
When my car is in LB the commanded AFR's from the ECU seems to stay ~20.5.
When not in LB the commanded AFR is ~14.6
FIREHAWK618 Where did you plumb in the O-2 Sensor to get your AFR readings ? Did you weld in a "bung" at the upstream side of the cat in the exhaust manifold ? Did you find a crack in your exhaust manifold ?
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