[targa911S]

It's the Permajunk. I had the same problem with one I puchased. Permatrash would check it and tell me there was nothing wrong. No sooner would I reinstall it and the permafail would die again. Crazy as it sounds it used to kick on my auto garage door opener too making the door go up and down!. I used to mount a friend of mines Bosch box as a piggy back and when the Permacrash would die I would just switch and go on my way.GET RID OF IT! A used Bosch fixed mine and probably will fix yours too!
P.S. Permatune could care if it don't work much less bad press! If you think you will get anything but "sorry" from them you're mistaken.