i have the AEM brute force and i spray it with simple green, let sit for awhile, the have a bucket with water in it thats filled up to the top of the filter line when it sits in there, dunk it a few times without letting water go over the intake opening, dump water and fill with clean water, repeat dunking and filling with clean water till no more dirty water appears, i spin the filter in the air till most water spins out of it, then let dry overnight