Cop on T14086, why are you trying to defend the butchers who carried out this work? This members car has been left in a mess. I will bet that the four clips at the rear sides of the housing are missing and so the whole thing probably does not sit up tight to inlet duct. Could it now be sitting on and chaffing brake vacuum hoses or electrical wiring underneath?? Is there a possibility that CO2 could make its way into cabin if there was a problem with, say, leaks in exhaust system, as air is being drawn directly from engine compartment into air duct and not from outside through filter housing as was the original design function??
Also get your facts straight about bolts. Originally there were TWO bolts and not FOUR and they were QUARTER turn not HALF turn. Now this member has to go to the trouble of unbolting.
I would consider this type of work as negligence although probably not criminal negligence!!
As eluded to by digger58 earlier, I think you should start looking up the Oxford Dictionary for spellings and definitions before coming in with your snide comments in future.
'Anyway' at the end of your post,T14086, used properly in the context in which you meant to use it, should be TWO words: 'any way'.
Like digger58, I am not English either, but no apologies for my rant.