ok i have a fault code of 00561 mixture adaption i looked on the vag website but was wondering this has only come up after i have replaced my thermostat, is it related? i have also put a new air intake in? also ( this is a bit confusing so i will try and describe) behind the radiator ( engine bay side) onthe top left hand side there is a metal cylinder with a blank metal pipe runing up. it has a hefty lead running into it and one out the bottom of it? what is this? is it colant or powersteering related as it is leaking!! i swear my car lasts a week with NO faults then small ones come back again! why am i such a perfectionist!