I am running ngk tr55? plugs i think and I still have the same d/p but took out the ubend and the exhaust is very free flowing, the muffler replaced the resonator. 2.5 inch past cat. I am running a 180 therm. but what do you mean drilled?
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2004 GTP COMP G Silver with Cone Filter, Corsa catback. MY Wife says that is it until warranty gives out. Brand New Yokohama Advan S/T's!!!
2006 Durango Limited Hemi 4x4
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