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+23 hp from just a catback exhaust?!
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03-12-2017, 07:03 AM
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Boxtaboy
07 Carrera S Cab
Join Date: Nov 2005
Location: New Jersey
Posts: 2,273
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2001 Porsche Boxster
2007 Carrera S Cabriolet
They say in the video's description that they used a Mustang dyno to confirm the numbers.
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