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  1. ('01-'02) 2001 - Stock Gutted Dual Cat pipe vs Single High Flow Cat Pipe? - Updated!

    EJ25 - 2.5L Non-Turbo (1998-2010)
    Background: N/A 2001 Forester S, Custom 2.25 inch magnaflow catback, stock headers, stock 1.75 inch(?) dual cat pipe (gutted). My goal is to acheive a nice tone, but also be decently (noticably) loud. Which would be louder? A: My stock gutted dual cat pipe OR B: My stromung Single highflow...
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