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red6spd · 06-16-2011, 09:05 AM

Go test pipes. And if you want quiet test pipes and dont mind spending more money go with the MotorDyne ART Test Pipes. HFC's are expensive and make less HP, yea its only a little but is less. There is still a restriction unlike the straight path of the TP's. As for your concern with the CEL. Fast Intentions Test Pipes are designed with an extended 02 sensor bung that is suppose to keep the CEL off but I have heard of cases of people still getting a CEL. Choice two, are you planning on getting the car UpReved Tuned?? If so the tuner who performs the tune can shut down the rear 02 sensors and trick the computer into thinking everything is a okay. Hope this helped.

P.S My rear bumper does not get stained but there is a smell of unburnt gas. But it like it. LOL

06-16-2011, 09:05 AM	#10 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	Go test pipes. And if you want quiet test pipes and dont mind spending more money go with the MotorDyne ART Test Pipes. HFC's are expensive and make less HP, yea its only a little but is less. There is still a restriction unlike the straight path of the TP's. As for your concern with the CEL. Fast Intentions Test Pipes are designed with an extended 02 sensor bung that is suppose to keep the CEL off but I have heard of cases of people still getting a CEL. Choice two, are you planning on getting the car UpReved Tuned?? If so the tuner who performs the tune can shut down the rear 02 sensors and trick the computer into thinking everything is a okay. Hope this helped. P.S My rear bumper does not get stained but there is a smell of unburnt gas. But it like it. LOL __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)