nope hasnt used any oil sice ive had it and no smoke that ive noticed apart from the occasional bit when you boot it but thats just part of having a derve isnt it? 
Small amount of black smoke is usual 
thats all good then, so a list of stuff to double check tomorrow after work is
vac lines
boost leaks
actuactor movement
try and find someone with vag com to test the n75
anything else?