Last night I took out my air box of my 93 525ia to check fitment and take measurements for putting in an ITG filter and complete heat sheild.
In taking off the air box I found 2 lines attached to a small fitting in the air box. The lines were filled with coolant and one went to the block and the other to the throttle body.
Does anyone know the function of these lines and the part that is in the airbox?
Thanks in advance.
93 525ia sharked with all the goodies