"catalytic" convertor.
yeah, from what i've seen on youtube and such, going catless on a 6'er makes it sound raspy, and can cause you to lose too much backpressure, and then your car will hate you and run like a 3-legged horse.
you could try replacing your 4 stock cats with 2 highflow cats, that might be worth looking into.
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/ Flat Rate Hyundai Technician  / |