I want to add too, a week or 2 before the above symptons happened sometimes(intermittently) when i would put the foot down it felt as if the turbo wasnt cutting in and letting off a good bit of smoke and when letting off accelerator and pressing again it went ok. I suppose similiar to vanes sticking in turbo. But since i cleaned the MAF that has never happened since. Would a faulty MAF give do that or just a coincidence since cleaned?
 
yea the cold weather is a pain in the backside, i managed 27mpg the4 other night according to my averaged mpg on the trip conp.... wasnt being to harsh to it either, ive seen loads of ppl drive harder than me n get better mpg at times :S im not lacking power tho so MAF im sure is ok might stick it in my mates Ultra sonic tank some time :)

MAtt