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  1. Focus RS Performance
    Hello everybody, So, I bought a Focus RS a while ago, it was stock, except for the exhaust. It has some weird cheap SW exhaust on the back and what seems to be some sort of resonator, but its 12" max. It kept the stock valve but honestly doesn't work half the time, or at least it doesn't seem...
    exhaust exhaust valve resonator
  2. Focus RS Performance
    Hello all, Looking at installing a MBRP's 3" Cat Back, Dual Outlet, T409 system I purchased over the Holidays. Was curious if anyone has this catback system and if anyone has deleted the resonator on it. It sits on top of the muffler. Dont really wana mess with the sound much but if it would...
    catback exhaust mbrp resonator
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