Section 3: Programming Your Vehicle; Installing A Preloaded Tune File - SCT X4 User Manual

3.1 INSTALLING A PRELOADED TUNE FILE

1. Connect the X4 to your vehicle's OBD II service port using the OBDII cable provided in the
packaging.
2. With the unit powered on and connected to the vehicle, highlight and select the "Program
Vehicle" option.
3. Next you will be prompted with a "Street Use Notice" which you must agree to. If you
approve and agree, press the center button on the keypad to select "Continue" to proceed.
4. You may be prompted to "Turn Key On". If so, please turn the ignition key to the "On"
position but do not start the vehicle. Highlight and select "Continue"
5. A screen will appear asking you to select your vehicle. Using the Down arrow key, highlight
and select the appropriate vehicle model from the list of vehicles provided.
6. Next you will be prompted to adjust options. These options are items available from SCT
to make minor adjustments to the calibration being loaded. It is not necessary to make
adjustments in this area. If you wish to make an adjustment, simply press the option you
would like to change and the screen will change to display the available values for that
option. When you are satisfied with the values of these options or if you do not wish to
change them, simply press the right arrow to highlight "Approve".
7. You will now be prompted with a screen to review your vehicle and options (if any selected).
Press "Continue".
8. The next screen, possibly two, will differ between vehicles. You will be prompted to "Turn
key Off" and/or "Turn Key On". It's important here to follow the prompts from the device.
9. X4 will now download the current file that is in your vehicle, referred to as the "Stock File",
and will proceed to upload the new calibration you have selected, with all options applied if
you have selected any, to your vehicle.
10. After this is complete, the device will display a "Download Complete" screen. You can now
turn the key to the off position and select "Done".
11. For GM vehicles you may see a "Power Down ECU" screen while the vehicle completes some
power down procedures.
12. You have now successfully tuned your vehicle!

SECTION 3: PROGRAMMING YOUR VEHICLE

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