Did you ever sort this? Currently the same situation, can see the garage has fitted a new afm, temperature sensor, new leads (I replaced with NGK) new plugs, one plug had a severely broken external insulator so I’ve replaced it again, I haven’t yet
checked the pipe after afm (tomorrow’s little job), not sure about the coil pack. Latest was the fuel pressure regulator which although improving it immensely isn’t right and will buck and misfire if anything close to full throttle is used. Before I
replaced the fuel pressure regulator the revs would drop severely at idle, removing the vacuum pipe resolved this but would misfire unless very light throttle was used
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