Has the cold start switch been broken during the turbo swap? they're very delicate when old.

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.unplug the 5th injector, it's underneath the throttle body, above the fuel rail.

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.you'll see the fuel supply line to it.

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.just unplugging the sensor may not fix the prob.

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.I had very similar prob with the cold start/injector overfuelling, so I've yanked it, it just doesn't quite catch as instantly as it did when extremely cold, I can live with that.
