I did have a Permatune box. After all of the voltage and impedance tests that I performed were good and from all of the Pelican forum readings about the Permadoom/Permacrap box, I suspected that the Permadoom box was the source of my intermittent ignition problems. I even bench tested the Permadoom box based on information on their website. Everything checked out but there are several posts on the Pelican forums that they can still be bad if they bench test OK. Even if it was not the source of my problems, I wanted to remove it and put a Bosch CDI unit back in the car. I purchased a rebuilt Bosch CDI box from Specialize ECU Repair (
Specialized ECU Repair - Rebuilt Porsche DME, BMW ECU, Jaguar ECU, Volvo ECU, Ferrari ECU Bosch Motronic Electronic Control Units) In Fort Lauderdale, FL and the unit came with a 5 year warranty. So since I was replacing the Permadoom with a Bosch CDI box, I decided to also replace the ignition coil (also recommended on the Pelican forums). Now after buying the new Bosch coil (made in Brazil), I discovered that there are potential problems with that coil. Zim's Autotechnik in the Dallas area won't even sell that coil anymore due to manufacturing issues (clearly listed on their website). The coil that was in the car with the Permadoom box was not even the right Bosch coil to begin with. It was a regular Bosch Super Coil (blue) that is not even designed for CD ignition systems.