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CL55 AMG, CL65 AMG, CL63 AMG (C215, C216) 2000 - 2014 (Two Generations)

Catalyst under effeciency

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Old Nov 6, 2021 | 11:08 AM
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Simon69
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Joined: Oct 2020
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From: Buffalo NY
E55 AMG CL55 AMG
Catalyst under effeciency
Yearly inspection is going around also need to renew registration, double whammy. got these DTC's from my Solus edge

[P200B] P0422 The efficiency of the right catalytic converter is insufficient. (function chain)
[P207E] P0432 The efficiency of the left catalytic converter is insufficient. (function chain)


any help is very appreciated! I'm tempted to believe its cause is from the muffler delete?

Mods: 76MM + belt wrap, Bosch 010, RaceIQ tune, Muffler delete, Lowering links. 99,5xx miles
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