fliplover
Well-Known Member
Federal law makes it illegal to remove a functioning catalytic converter.I don't think high flows are legal anywhere IIRC. Last time I checked it was illegal to tamper with cats unless they needed replacement.
By federal law the new converter must be identical to the factory original and must be installed exactly to vehicle manufacturer specifications.
https://itstillruns.com/legally-remove-catalytic-converter-7474527.html