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Old 07-10-2016, 04:55 PM   #1
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Bypass pipes

My right rear cat is rattling, been kind of driving me crazy. Figuring on just using bypass pipes - any recommendation on vendor/brand?


2002 Boxster S, Arctic Silver, 18" Turbo Wheels, 6-speed
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Old 07-10-2016, 05:06 PM   #2
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Everyone seems to love them and if the bolts aren't too rusty it's not hard at all to install yourself. Popular brands are Fabspeed, Circuit Werks, Top speed, NHP. There's lots of threads with pics, installs and video clips to help out.
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Old 07-10-2016, 06:48 PM   #3
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I used The Topspeed brand on mine. At $170 delivered it got the job done plus it made the exhaust sound a little better.
03 Carrera
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Old 07-11-2016, 04:32 AM   #4
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I used Circuit Werks. They fit without issue. Hardest part is getting original exhaust off
2002 S - old school third pedal
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Old 07-11-2016, 12:07 PM   #5
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Circuit Werks here as well. I ended up just cutting the old hardware out.

FWIW, I quickly realized that the rattle was not just the secondaries, but the primary cats on the headers as well, so I replaced them shortly after. If I were to do it all over again, I would replace everything at once. I have OBX catless headers with Circuit Werks bypass pipes and mufflers. Nice sound and fairly inexpensive.

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