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primary cat

  1. Anyone removed their primary cat themselves?

    Engine & Tuning
    I've got a leaky exhaust on my 320D at the flexi joint and bought a used front section from a guy who was dismantling a similar car. I had planned on doing the swap myself as I have all the tools and access to a pit for a few hours. However, it doesn't look as easy as I had thought. Getting to...