Soooo was driving home this evening, and the Civic threw a CEL out of nowhere. Came to a stop at a light, and the car started idling really rough, almost stalling out. Once driving, it drives fine, but hesitates/stutters occasionally. Got home, pulled the plugs, and all looked pretty good. The #3 cylinder did look a bit burnt, but not terribly bad. Checked fluids, all is well. I double checked my distributor timing, all was fine. Strange. While the car is idling, it idles a tiny bit rough, but you can't hear a thing from the engine itself. I can hear a distinct misfire from the muffler, though, and when the car cranks, it misfires as well. My buddy has an OBD2 code reader, so I'll go grab that tomorrow to scan the code and figure out what's going on. Hopefully it's just a clogged cat/muffler. If so, new exhaust it is this week!