Here is a heads up for those using the audio alarm for the air intake manifold temperature. The exhaust brake will cause a high temperature spike which will be caught by the VMSpc audio alarm even though the log will usually not show it. If you set the alarm to sound every 15 seconds then it will continue until you shut VMSpc down. The first time this happened I found the alarm very alarming and since I had some previous problems with the readings and having codes set I may have over reacted by purchasing a new sensor. I don't recommend using the option to have the alarm sound every 15 seconds because it can't be shut off at least on my software, version 2.3, build ? (something short of build 4). I now use the sound once option.