Can most of the Black Box II features be added later if I don buy them now?
There are 2 options to consider, which are difficult to add at a later time: $100 Optical Isolator, DTM-OI. Although this can be easily added, it may then be too late. The optical isolator helps prevent a high voltage “jolt” from the engine, traveling back through the data logger to damage your computer. About a third ofour customers get one, about 2 thirds do not. We rarely hear about this happening, but it CAN happen, especially if you pull a plug wire to kill the engine. The ignition’s high voltage travels back through the inductive pickup through the data logger to your computer’s com port. On desk top computers, only the com port board (or USB board on computers using USB adapters)may be damaged, which typically can be easily replaced by a computer tech. On a laptop computer, the com port is part of the motherboard, which means the whole computer may be damaged. On older, desktop computers, I’d say you probably do not need one. On a new, expensive lap top computer, I’d recommend g
