M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Primary converters question

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Old Apr 13, 2021 | 12:02 AM
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IgorE350's Avatar
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From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Primary converters question

My 01 ML55AMG left primary converter got loose and started to rattle. Sounds pretty bad.
Any advice what should i do?
Thinking to take both sides out cut primary cats open, get them out and weld it back and use spacers on 02 sensors, leave secondary converters in place. I was wondering how would it effect the sound inside the car and using 02 sensor spacers would it work without triggering check engine light? what size spacers i would need and what would work good for this car? i knw they got all different sizes and with filters on them.
Or anyone have differed suggestion?
Thanks!
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