Quote:
Originally Posted by sperry
...if the up-pipe cat were to break in anyway on the WRX, there's a good chance the bits would destroy the turbo.  ...
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Good point. It's also good to get the EGT sensor out of there since it's only there to prevent hight EGT's from destroying that cat. Once you remove the UP cat, it serves no purpose and is also a potential hazard if a chunk breaks off.