Non-resonated (louder). Not recommended for fitment with hi-flow sports catalysts TIP STYLE = Dual 100mm GT100 PIPE (MM) = 69.85 PIPE (INCHES) = 2.75 EC-APPROVED? = No EC-APPROVED? = No RACE SYSTEM = No VALVESONIC = No FITTING TIME = 1.00 to 1.50 hours...