to change the filter, is pretty easy, and they dotn cost that much, u gotta get the lil filter puller kit thing at like an autozone, its these lil plastic rings u slip in between the filter and the fuel line on either side of the filter, and the lil plastic rings help seperate it, its really really easy, id do it myself if i was you, just watch for gas falling on ur face, some will leak out, just lol, have ur mouth closed, but id definately do that myself, iv changed mine twice already, so its not the filter, iv ran injector cleaner through it, now as far as then injectors being CLEANED CLEANED, no i havent, and the plugs and wires was an issue at one time but i replaced them, that was the cause, the 3rd cylinder wire was burnt in half, so i was only running on 5, so yea check the plugs and wires