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Originally Posted by 986NY
Hi Guys,
I have a 2002 Boxster S and I thinking of installing a Fabspeed secondary cat bypass pipe. These pipes eliminate the secondary cats. I would like to just use the Fabspeed Bypass Pipes and still use the stock 986 2002 Boxster S stock muffler.
I wondered about the new exhaust sound, if any, and how it may compare to the stock sound with the secondary cats.
Also, do you think there would be any noticeable increase in HP.
All comments will be very much appreciated.
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This topic has been commented upon ad infinitum. In any case, there's no real horsepower to be gained by simply eliminating the secondary cats . However, it will reduce a fair amount of unnecessary back pressure, and give your vehicle a slightly more aggressive sound. Perhaps, most importantly, it will shed a significant amount of weight . And that in and of itself can have it's performance advantages .