on my disco after not usuing it that much, (was working away for 4 weeks) coming back and ive just recently noticed it has lost some boost, i have a boost gauge and it used to go up to around 11psi, now it just goes to about 6 or 7psi. and it is noticeably slower. it does put out a bit of grey smoke and cold start up, but clears after a couple of mins. ive done a search and found some similar issues that other people have had but not quite what i was looking for, ive not had chance to get the bonnet up and have a good look around yet so thought i would put a post up on here . any help would be much appreciated.

Fixed it! Within about 30 seconds of opening the bonnet. It was a split vac pipe to the actuator