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Old 05-16-2017, 03:47 PM   #12
Amputechture
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Join Date: Aug 2015
Drives: 2014 BRZ
Location: FL
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Quote:
Originally Posted by Detroiter View Post
Damn, why would they taper it down that narrow? I feel like it's counter intuitive. Tests have shown our engine has the best exhaust flow at 3in but it is of course louder so I understand the 2.75 and 2.5 to quiet it down some but 2.25 would just be making rasp and less power



Berk's explanation was that they wanted the end user to be able to have 0 fitment issues with the OEM catback and be able to retain the factory donut gasket. F'ing stupid if you ask me. 99/100 people that run a front pipe on this car are going to have an aftermarket CBE. They should have just made the bolt pattern on the flange be compatible with the smaller diameter stock flange.
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