mdnitedrftr
LVC Member
I went ahead and bought and installed an MSD DIS-4 in my car. Turns out I need a tach adapter to make it not throw a code, so I unplugged the MSD box and put in the bypass plug (returns everything to stock) and now when I turn my car off, but dont open the door, the PCM? (blue thing in glove box) hums loudly, until I open the door. Any ideas on whats up with it?