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      03-15-2012, 12:43 AM   #12
Pete_vB
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Drives: '69 GT3, GT4, 1M, 912
Join Date: Nov 2010
Location: SF Bay Area, Shenzhen, Oman

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Quote:
Originally Posted by hopofthese View Post
i have the cp-e catted down pipe. No check engine and fitment was good.
I'm curious what your experience has been with these vs stock? I notice cp-e claims the same gains with catted vs catless, which seems unlikely. Did you notice an improvement with them?
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1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
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