I have resonated test pipes. You will most likely throw a CEL. I would have a shop install them, as the bolts which connect the catalytic converters to the headers can be very difficult to get off and often break.
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Injen CAI | CNT Resonated Test Pipes | ARK Grip V2 CBE | Swift Springs | H&R 20mm Spacers | Ings+1 Lip
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