After a bit of advice, I have had a high idle for a little while I did manage to get it a bit better but I was hoping to address this issue while converting to a td05, I did find a split intercooler sleeve which I replaced - this got rid of the up and down hunting affect I think. I've driven the car a small distance but I have found the idle is around 1500, if I rev it it will stick around 2k and then slowly drop off. I removed the plug to icv with it running, this had no affect on the engine whatsoever. I have been hearing a sucking sound from beneath the icv what's under hear that could be leaking? Does anyone have any idea where the vacuum on the bottom of the icv runs to so I can check this? Any pointers would be much appreciated! Cheers