It seems to work… Get a rubber hammer from Autozone, get the car up as high as you can, (loft would be righteously awesome here,) wail on it wiht dead blows to the center, front, and rear of the catalytic converter.
“This is supposed to destroy the inside and loosen up stuff that can then be blown out, or create more airflow.”
Also works better when it’s hot, followed by a highway run, kinda like you stole it. 🙂
Hack way, for sure, but.. Has anyone (else) seen positive results? I kinda got sick of that P0420 and researched several methods to keep it off. I think I have arrived at that point.
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