Hi again, i have found the culprit! before replacing the fuel filter i gave the hoses another check over, turns out the boost pressure hose has a big split in it around 2 inch in length! I have a new one on order. For now, i taped around the hose to “bodge” it and straight away the difference in pulling power was night and day!.. a big puff of black smoke and off she went! A fresh MOT and the family wagon is back on the road.
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