Anyhoo so for the last few weeks I've noticed my idle getting rougher. I've got an Ecam so its always been lopey but when the idle settles down its get rough and shudders a bit. Also the idle has not wanted to settle down (normally its around 700-750) unless I let it idle for a long time, it'll sit up around 1100-1200. So back the the subject, I've started to notice a knocking/rattling sound comming from my upper intake. At first I thought my valve train was fooked but out of frustration and a little desperation I braced my hands against the upper intake and pushed hard...the sound went away. My question is...and Im grasping at straws here...do you think the intake could have shaken loose causing the rattle and maybe a vaccum leak (causing the rough idle)? Thanks for the input 
