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boost leak

  1. power comes on late / less power. boost leak?

    Fiesta ST Maintenance
    A few weeks back I noticed my 2015 Fiesta ST seemed slower than normal, it doesn't put me into the seat like it used to when accelerating hard. I suspect this may be a boost leak or similar issue so I took the car into my local dealer Kings Ford. They said they couldn't find anything wrong but...
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