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Old 07-16-2010, 06:50 PM   #1
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Thoughts on Bypass pipes (2nd cat)

Just wanting some input on these (or any other bypass pipes)

http://www.****************************************.com/ShowItem/274216%20Porsche%20Boxster%20Secondary%20Catalytic %20Bypass%20Pipes.aspx

-Weight reduction
- i might have clogged cats
- possible perf. gains (doubt it)

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Old 07-16-2010, 08:07 PM   #2
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It will reduce some weight. Cats are pretty heavy.
There should be a small power increase.
If your box is a 97-99 MY you may get a CEL. Most Spec Boxster drivers tie the sensor out so that it hangs (without dangling) and get copious amounts of Oxygen.
A friend who fields a spec 996 advised that he just added a spacer to the sensor to get it out of the flow of exhaust fumes but allows it to warm up which according to him is important.
I have been looking at bypasses and will pull the trigger soon, I just don't see myself spend $400+ on a pair of tubes. There has to be a cheaper option at a local muffler shop.
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Old 07-16-2010, 09:46 PM   #3
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yea, they're kinda pricey... cheaper then new cats though eh?

i have a daily-driven MY00 base, but would love to replace a set of the cats
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Old 07-17-2010, 06:12 AM   #4
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With the bypass pipes you'll get a bit more power, and the loss of 15 or so pounds isn't bad, either.
Yes, indeed, most muffler shops can build a set of bypass pipes for a lot cheaper than $400+ bucks. However, some won't do it b/c of laws about altering the emissions equipment.
FWIW, the pipes that Vertex et.al. advertise for $400 are a high grade stainless steel. If you find a muffler shop using the same grade stainless with bends done on a mandrel, you're gonna still pay around $400.
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Old 07-17-2010, 04:22 PM   #5
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My car's just a racer now (although I drive it to the track) so I don't need the parts to shine, just to work. :-)
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Old 07-19-2010, 05:29 PM   #6
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Look around at the classifieds. I picked up an almost new pair of Fabspeed pipes for half the cost of new ones, shipped; although this was a couple years back.

They are worth every penny as the sound, coupled with my sport exhaust, is intoxicating.
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Old 07-20-2010, 10:30 AM   #7
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Plus 1 on that!!! Love my PSE w/ FB by-pass pipes...

I'm getting ready to pull the trigger on some Turbowerx headers. Cannot wait to hear an even meaner growl....

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