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catless downpipe
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  1. Focus ST Discussions
    I had a catless downpipe for a few months until i decided to go with a sport cat downpipe assuming the cel would go away. I cleared the cel lights on my sct tuner but a few days later it came back. Ive heard if i get a new O2 sensor it might fix it but just wanted some more info before i buy one.
  2. Focus ST Discussions
    I just got my catless DP for my 2013 basically stock st, and am planning on getting it installed in the next couple of weeks. The only thing I've done to it is a resonator delete a while ago, and I really want a loud exhaust. I watched a couple of videos but they don't really do justice on the...
  3. Focus ST Guides
    Hi guys, I recently bought a new cat lees downpipe, mountune intecooler with its Cobb accessport and mountune tune. Just wanted to see if y’all have any advices, recommendations or warnings regarding this upgrades I’m doing to my car. Also, if y’all know about problems that could occur do to...
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