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Re: Cleaning primary convertor debris from secondary convertor
Posted to Technical Theory Forum on 6/4/2021 3 Replies

Sounds like someone tried hollowing out the cat, but gave up part way into it.

Yep - defouler. Oldest OBD-II trick in the book. The silver bullet for a P0420, hahaha. Login to read more.

3 Replies Received (View Replies)