ok, i got to compare my 04 to an 02/03, and i have a sensor or something at the end of there C and D are. so i can only have A and B in my oil catch can. i am just informing everyone. but ive had my catch can in my car for about 500 miles and the little white filter is full of black and brown crap.
I TOTALLY RECOMEND doing this oil catch can. so far the return vac line to the turbo inlet is clean. it has a little residue, but thats to be expected. i would say 98% of all the crap is in the filter and the catch can. but i would leave the white filter in the can, it acts very well, and i would install opposite to the arrow on the line, because that way the oil is pushed through the filter and not pulled through.