I just fitted a unifilter to my AE92 last night, so I have a filter box with a almost new filter as well. I can't say I've quite finished with it yet as I am having a couple of problems with the idle, which I am hoping you might be able to help me out with...
On the top right hand side of the throttle body, there is a small rubber tube going to the original airbox, which is part of a sensor that supposedly controls the idle for whilst the A/C is on. Now that I have the Unifilter on, I have no place to put the sensor, and now it won't idle properly - how's the idle on yours? Do you know where the sensor is on yours? Maybe I can take some digital photo's at lunch time and post them...