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  1. Occasional shutter on start up

    Focus ST Repair Shop / Service
    2014, less than 2k miles. On start up occasionally my RPMs drop and she shutters for a second, then RPM's return to normal idle. Any ideas? If it keeps up, I'm taking her in.
  2. Tune required for COBB catback and downpipe?

    Focus ST Performance
    How does the ST run with the catback and downpipe installed without a tune? Also, my dealership said it is going to take a month to get the replacement motor mounts to fix the 1-2 bang. Should I wait to install the exhaust until the mounts get replaced to avoid warranty issues? (I'm worried...
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