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faulty pcm

  1. Fiesta ST Australia
    So I got a REVO stage 1 tune on my FIST about two months ago. Loved the tune and how fast the FIST can go. but about a week ago sitting idle at a roundabout I got a engine malfunction service now notification and the FIST wasn't hitting boost. I took it back to the tuner and the guy checked if...
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