Legalities of an Off-Road H-Pipe?
if i use an off road H pipe on my car but still run cats is that ""ilegal" , or am i dumb for asking that since the damn pipe says "OFFROAD" on it? my friends stepfatherhas a shop and would pass me on inspection, im just wondering what the law has to say about it (by the way i want to run long tube headers with a MAC offroad H with 2 chamber flows)
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