Well, after reading this thread and given the fact my car now has over 90,000 ks on it I decided to remove that strainer from my car. I have had many Turbo cars and not 1 has had a strainer on it and none of the Turbos ever seized or had any dramas so given that and the fact ive been a mechanic for 20 years I made the decision to leave it out. I wasnt prepared for just how small and laughable the thing actually is. No wonder the are blocking up and causing dramas. The car is a 09/06 BF so not sure if it differs to older or newer cars. I took a couple of shots to show how small it is. Next to a 5 cent piece........ Here you can see the Carbon on the inside. It is at 4 points around the inside this is just 1 of them the others are spread out around it where the 4 holes are in the fitting. The Carbon that is on there is after it has been cleaned with Degreaser. Hope these pics help. Leave it out