Hey, I have a 1991 525i (E34), and I cannot find the cabin air filter! I have taken out pretty much the whole right side of the car in the cabin, and I cannot find it anywere. I saw a photo tutorial of an E34 M5, but there is no little slot next to the 'shark.' To my understanding it should be in between the 'shark' (I guess the AC Control unit) and the AC coils (if it is there, how do I get to it?) If anyone has any thoughts please help me! Thanks AZ