M
MyMomWasMyLife
Member
- May 2, 2026
- 39
I know drilling a hole in a catalytic converter will cause more carbon monoxide to escape. But will that only mean anything if you're in a closed garage? If you were out in the open with a hose attached from the tailpipe and the other end in a slightly opened back window with the space sealed tight with tape, would it mean much then? Or is the excess carbon monoxide just going to escape through the hole and into the outside atmosphere?