First off, Hi everybody! I've got a 2005 STI with 62,000 miles. We bought it new, its my wife's daily driver, and my hot rod when needed Its bone stock, no mods at all. The other day all of a sudden the cruise control light started flashing and the "check engine light" came on. She was driving, and said that it seemed that both things happened at the same time. I have a basic scanner, I pulled the code, its P0303- "#3 cyl misfiring". I should mention that it most certainly needs at least plugs, as the engine is idling a bit rough at times and they are the originals. But there is no miss at all at any speed, just a very slight stumble occasionally at idle. The cruise control was off, we don't use it anyway. I made sure that it was off, but the check engine and the flashing cruise control light were still there. I re-set the ECU,(disconnected the - cable, waited 5 min), the lights both went out. and they stayed off for a few days, and then they both came back on. Any ideas, guys????