E46Fanatics - View Single Post - Anyone running aftermarket headers in Maryland?
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Old 02-11-2013, 12:54 PM   #17
330i ZHP
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there isnt anything legal...no sorta...any movement or replacement of OEM cats is illegal, not only in the State of MD but federally as well.

That being said, I have headers on my touring...and I will say it again - I cannot stand them anymore...too much rasp and too loud - I am glad I dont have to drive that car everyday
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