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- - help with P0420 (https://www.camryforums.com/forum/new-member-area-5/help-p0420-52577/)

bossman

11-11-2018 06:54 PM

help with P0420

Hello all, I have a question. I have been watching videos on using spark plug non foulers to fool CPU into thinking all is ok with cats. Is there any long term damage being done to motor by installing these non foulers. Thanks for any help.

toyomoho

11-12-2018 09:23 PM

No.

Just make sure the engines air/fuel ratio is not so off it damaged the CAT.

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