Unfortunately i have seen this before when using race cats. The oem setup with pre and post cat lambda probes are very sensitive and think your cat is On it's way our when it's not.
I might be wrong here but I think some tuners can disable the post cat lambda so it doesnt check the cat like on the early Audi s3's.
Sorry too bring this back up does this code refer to the pre or post cat lambda sensors so I can replace this also would this cause the car to run lean as a result of the poor readings.
Will be post cat as it is looking at the result of what has gone through the cat
I believe fuelling adjustments could be made as a result of its reading but probably more so at a pre cat level
Thanks ran sum logs earlier cars playing a bit funny vaccum levels are normal according to the gauge . Lambda readings top end are 0.900 so not the richest. G/s are 210-220g/s on average thought maybe injectors would be maxxed but the duty cycles are only 86% so im thinking maybe boost leak somewhere confusing the life out it possibly?
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