Evenin I've been searching on topics to do with breather pipes but cant really find anything specific to the AJL engine. All I want to know really is if there any breather pipes that are prone to blocking up with **** and be taken off and benefit from a clean out? I know Audi 'long life service' can be a killer so want to give it all a proper going over as I've not had it long. Whilst I was searching I read a bit about the PCV system being deletable. Is this viable, desirable, and do-able? Thanks for any help once again. All I ever seem to do here is ask questions lol Si.