anyone able to tell me what kind of filter i need to use if i gave a part number of the ryco ones? cause i been trying and as of yet i havent been able to find one... i have a relocated filter and for some reason it turns out to be the filter size of an old bmw.. making it a little harder to source than just using an EA020.. pretty certain i use a Z422 by ryco (off the top of my head) or something like that... ill edit this if im mistaken. i might be thinking of the standard one lol...