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Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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  • From
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2005 911 Carrera S
  • Future cars
    Mini Cooper S Convertible
  • Former cars
    2002 996 C2

9971830's Achievements


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  1. i have done extensive research over the last few months and i am very confused about what aftermarket exhaust is the best. i received a full exhaust system from one of the above mentioned companies and the quality was sub-par. after viewing pictures the salesman agreed w/me concerning the quality and accepted back the product i'm now back to square 1. my 997 CS is sitting in my garage w/the stock system removed. has anyone done any type of comparisons or purchases of the headers, cat's, & mufflers from any of these tuning companies? i know enough at this point what to require 1. mandrel bent tubing (no welds on angles as it will interupt the air flow) 2. good customer service (not a company only willing to correspond through e-mail) 3. german made cat's that have a guarantee not to turn on your co2 sensor 4. fitment: products that will fit together w/perfection 5. reasonable price A). Who has the best HEADERS? WHY? B). Who has the best Cat's? WHY? C). Who has the best Mufflers? WHY?
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