Changing the timing on a Subaru Outback to install performance parts provides gains in horsepower and fuel economy. This project is for advanced mechanics only and requires a clear understanding of automotive computer reprogramming. Adjusting the timing on a Subaru Outback requires special tools and reprogramming the vehicle's onboard computer.
Plug the PC interface device into the computer and install the necessary drivers by following the wizard on the screen. Turn the key to the "On" position without starting the vehicle and turn off any accessories such as lights and climate control.
Turn the engine on and allow it to reach normal operating temperature then shut it off. Connect the PC interface device to the data link connector located directly under the hood release on the driver's side kick panel.
Switch the ignition on and then the PC interface device. On the menu that appears on the interface device select "Each System Check." Highlight "Engine Control System" and click "OK."
Click "Current Data Display & Save" and then "Data Display" to view the current timing settings. Make adjustments as necessary taking care to double-check each change before entering it.
Shut off the engine and disconnect the PC interface device from the data link connector. Restart the Subaru Outback and allow it to idle for 5 minutes.
