Engine Smoke on Startup 737-400

Hey All,During my Over Head panel build a strange effect started. I say strange cause it twas not there before, Cool effect thought and would be well suited for DC3s andall those big piston engine aircraft, Reminds me od a DC6 starting up. On a really cold daythere would be some smoke due to seals shrinking as I recall.Check the shots..Douglashttp://forums.avsim.net/user_files/145791.jpghttp://forums.avsim.net/user_files/145792.jpghttp://forums.avsim.net/user_files/145793.jpg