[Powershift1038]

I have had a few MSD boxes burn up over the years, in a few different types of cars. The boxes themselves do not like to be hot. They need good ventilation. I don't know that just leaving it powered up (with the key on), with no air flowing over it, would do it? But, it may be possible. I got pretty good at bypassing the box to see if the box was keeping the car from running. I also started mounting small computer fans on the boxes to help cool them down.