Thread: 02 sensor question on headers-question for any m54
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Old 11-05-2018, 01:46 PM
lo_jack lo_jack is offline
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That makes sense. If there was enough space I'd put the cats right off the collector. I have a bad feeling that moving the cats downstream of the head at all makes the DME freak out about cat efficiency, but I'm going to run some anyway and see what happens.
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2001 E53 3.0 5pd
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