I always make it a point before I do any work with sensitive electronics to make sure I have rid myself of any static charge (especially this time of year when your heating and drying the air inside). Since I am usually in my garage (where my electric service panel is) I touch one of the bare metal panel mounting screws. There are days when I swear I can draw a 6 inch arc when I get in or out of any vehicle!Go Faster said:I have decided to use a mail order tune, But I don't know how to correctly install the PCM. I would guess I just unplug the battery and remove the old pcm and then reverse the procedure, anything else?