2K6S2K

Ran into my first problem with my S2. I have a CEL for a #2 cylinder misfire. I changed that spark plugs with the NGK Factory replacements, and I changed the coil as well. I have cleared the code a few times and it still comes on, but i noticed that it will only come on if i dont allow the car to FULLY warm up. Normally I start driving at the 4th bar of temp. I called Honda and they actually just had another 06 that has basically the same problem and they were not able to figure out why. Anybody care to shed some light on this subject?

Thank you for your time.