SCT X4 Power Flash Programmer Instructions
- June 13, 2024
- SCT
Table of Contents
’20-’21 FORD F-250/F-350
6.7L Tuning Instructions
SETUP:
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Ensure vehicle is turned off and parked safely.
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Fully open the hood and ensure it is secured.
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Locate the ECU in the firewall on the passenger’s side of the vehicle (See Green Arrow)
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Be sure to release the locking tab (green arrow below) before moving gray connector arm. Disconnect all 3 of the ECU connectors.
Note: You MUST disconnect ALL 3 connectors anytime you are installing or uninstalling your tune.
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Connect the ECU connector provided with the X4 to connection 1 on the ECU as shown above and to the SCT box.
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Connect the X4 to the SCT box using the OBDII cable.
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Connect the SCT box to the battery using the battery clamps provided. Battery Clamps Install: Red to positive, black to negative.
TUNING YOUR ECU:
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Be sure you have completed the setup steps on Page 1 & 2.
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On the X4 select PROGRAM VEHICLE.
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Review and accept the STREET USE NOTICE.
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Select which Custom Tune file you want to program.
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If this is your first flash, you will see SAVING STOCK DATA. This is normal.
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The X4 will now program in the custom tune file. When complete, reconnect the ECU by disconnecting the battery clamps and reconnecting all 3 ECU connections.
TUNING YOUR TCU: -
Your ECU is now tuned, plug the X4 OBDII cable into your OBDII port under your dash to begin programming your TCU.
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On the X4 select PROGRAM VEHICLE.
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Review and accept the STREET USE NOTICE.
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Follow the on-screen key prompts.
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If this is your first flash, you will see SAVING STOCK DATA.
This is normal.
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After stock has been saved the device will begin the tuning process.
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When complete, turn the key off and select DONE to return to the main menu. Tuning is now complete, you can disconnect the X4.
RETURN YOUR ECU TO STOCK:
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Be sure you have completed the setup steps on Page 1 & 2
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On the X4 select PROGRAM VEHICLE.
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Review and accept the STREET USE NOTICE and press RETURN TO STOCK.
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Confirm Return to Stock.
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The X4 will now program in the stock file.
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When complete, reconnect the ECU.
RETURN YOUR TCU TO STOCK:
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PLUG INTO OBDII
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On the X4 select PROGRAM VEHICLE.
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Review and accept the STREET USE NOTICE and press RETURN TO STOCK.
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Confirm Return to Stock.
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The X4 will now program in the stock file.
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Your vehicle is now back to stock.
LIVELINK GEN-II / ADVANATAGE III
To use Live Link with the 2020-2021 F-250/F350 6.7L please update to the
current release version including any outstanding database updates.
LIVELINK GEN-II: Version 2.9.4.0 or newer, including any outstanding
database updates.
ADVANTAGE 3: Version 3.4 Build 22305.0 or newer.
For technical assistance please go to
www.scflash.com and click support.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>