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  1. 2010-2013 Mazda 3 Engine and Performance
    i haven't seen any videos on this but i was wondering if anyone cared enough to see/hear a vid maybe? i just deleted the muffler actually so i still have a cat and res but it sounds pretty good, no detonating fuel pops and its very loud... i drive a 2013 mazda 3 skyactiv i Grand touring MT in...