1. Disconnect the battery negative terminal.
2. Remove the air intake box.
3. Remove the throttle body.
4. Remove the upper radiator hose.
5. Remove the alternator cooling hose.
6. Remove the coolant temperature sensor.
7. Remove the bolts holding the ECU to the frame.
8. Carefully disconnect the ECU connectors.
9. Install the new ECU by reversing these steps.
Here are some additional things to keep in mind when replacing an rx8 ecu:
• Make sure that you are using an OE ECU. Aftermarket ECUs may not be compatible with your rx8 and could cause problems.
• Be careful when disconnecting and reconnecting the ECU connectors. Damaged connectors could prevent the ECU from functioning properly.
• It is a good idea to have a qualified mechanic perform this repair. Replacing an ECU can be a complex procedure, and it is important to make sure that it is done correctly.
