How to Install a BMW ECU Race Chip

1. Open the glove compartment and remove the screws from the upper cover with a Phillips screwdriver. Pull the upper cover off.
2. Detach the four screws holding the ECU box to the ceiling of the dashboard, using the Phillips screwdriver. Lower the ECU box
3. Release the lever on the ECU plug to remove the unit from the vehicle.
4. Turn the ECU box upside down. Bend out the retaining clips that are holding the cover in place, using a flat-head screwdriver.
5. Turn the ECU box over and remove the cover.
6. Pop off the cover holding the ECU race chip in place, using a flat-head screwdriver. It is located on the bottom right.
7. Pry the ECU chip up slowly with a flat-head screwdriver. Make note of the direction it is installed.
8. Insert the new ECU chip in the same direction as the old ECU chip. Make sure all pins are inserted into their corresponding pin sockets. Pop the ECU chip cover back into place.
9. Replace the cover of the ECU box. Turn it over and bend the retaining clips back into place. Reattach it to the plug. Reattach the box to the ceiling of the dashboard with the four Phillips screws. Replace the upper cover of the glove compartment and close it.