When purchasing a SCT X4 for a custom tune, you may be required to provide the vehicle ECU code. On some older vehicles the factory stickers may have been removed/changed/or otherwise unavailable.
Without knowing the ECU code there is still a way to obtain a "strategy code" to create a custom tune. You will require to have the SCT X4 prior to the custom tune being created. Once you receive the SCT X4 follow the instructions in the video below to obtain the vehicles "strategy code". Once you can provide us this information, we will be able to generate and email a custom tune file you can then upload to your SCT X4 flasher.