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Old 09-05-2011, 05:12 PM   #28
insite
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Join Date: Sep 2004
Location: Atlanta
Posts: 1,820
some clips comparing OEM vs. bypass.

engine is a 3.4L with a custom intake, headers & a stebro race muffler. the OEM cat pipes are from the 2.5L. the bypass pipes are 2" fabspeed.

http://vimeo.com/28638915
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insite
'99 Boxster
3.4L Conversion

http://i156.photobucket.com/albums/t...1/KMTGPR-1.jpg
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