Originally Posted by So.Cal_INTEGRA
:squint: It seems to me that this exhaust guy is really not a Certified "Exhaust Guy" if he said that, sounds like a un-educated back alley mechanic if you ask me.
Replaceing/Modifying Catilitic Converters is illigal.
He's been doing exhaust for almost 20 years. He is very reputable. He basically just told me that it'd be fairly worthless for me to do, as it doesn't free the flow up all that much, just bigger piping.
And as for the legality, I did it myself

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