I have my MSD 6al located in the trunk with the rev. limiter. I had not had any problems until last year all of a sudden my car turned off and would turn back on. I by passed the msd and the car worked so I took it off along with my boost retard and sent them to msd to get checked. MSD fixed my 6al and said the boost retard was ok. I really hadnt driven my car much but a few months back My car started turning off again and wouldnt start with the msd connected once it was by passed it would start again. The weird thing is that once it cooled down or the following day it would start again with the msd but later it would turn off. I contacted msd and they said that It was maybe my coil that was week. They stated that if the msd went out normally it would not start again. I replaced my coil with their blaster coil again. But this week end my car would not start again until the msd was bypassed. I have a feeling the msd is going out again. Has anyone had similar problems? Could it be the location of the box since I extended all the wires? I will probably be ordering a new one becouse msd took a few weeks to return my old from being repaired, I just wanted to get some input from you guys first.