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  1. Engine Performance
    I am a bit new to the car mod world. I have a 2013 WRX so far I have done a sf intake, recirculating valve, full 3in catted turbo back exhaust. I want to make my car a little louder when I drive sometimes for fun, but I want to be able to not be obnoxious all the time. I would just do a catless...
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