Ford Focus ST Forum banner

resonator delete

  1. Exhaust question...

    Focus ST Performance
    I've seen a lot of people doing muffler and/or resonator deletes on their ST's. I asked a guy about it at a local shop and he told me that he wouldn't recommend hacking anything out or cutting the muffler out because he didn't think it'd have enough back pressure. My question is, is this true...
Top