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Thumbnail Filmstrip of 2003-2007 6.0L Powerstroke Gearhead SCT Custom Tuning Images
Custom tunes offer much more driveability and performance than the standard preloaded tunes. Already have a SCT Livewire, SCT BDX or SCT X4 but want custom tuning? Add Gearhead Automotive custom tunes to your existing SCT.
Free revisions within 30 days of purchase.
Custom Tune Stock Nozzle Descriptions:
- Street Race Lite (SRL) Awesome daily driver file (no towing) with butt kicking response, low smoke, and outrageous power. The best shifting all-around street file on the market period! Typical gains of 1-3 MPG have also been reported with this file.
- Studded SRL (SRL+) The one up to SRL for studded trucks. Simply adds boost over SRL for 10-15 more HP and 50-60 more FT/LBS of torque. (+135HP)
- 8000 Lb. Tow (8K Tow) This tow file is rated for 8000 pounds of towing without being studded. Studded trucks can tow 13000 pounds with this file. (+40HP)
- Unlimited Tow Since this file maintains stock fuel parameters, it can tow whatever you want while giving better shift firmness than stock.
- Extreme SRL SRL+ have you craving more? This is the file for you! (+150HP)
- XX Tow - This tow file is set up for any after market injectors while trying to keep the EGT's (Exhaust Gas Temps) down.
- XX Reduced Fuel - With this file it adds more boost and fuel for a more powerful street tune while maintaining drivability.
- XX Full Fuel - This file will be similar to the XX Reduced Fuel until you put your foot to the floor. Then you need to be ready for what we call "FULL FUEL". Go fast and eat cornbread!
- Modifications to your truck
- Turbo on your truck
- Remote oil cooler yes or no
- Fuel System Modifications
*Tunes are emissions compliant
Custom tunes offer much more driveability and performance than the standard preloaded tunes. Already have a SCT Livewire, SCT BDX or SCT X4 but want custom tuning? Add Gearhead Automotive custom tunes to your existing SCT.Free revisions within 30 days of purchase.
Custom Tune Stock Nozzle Descriptions:
Street Race Lite (SRL) Awesome daily driver file (no towing) with butt kicking response, low smoke, and outrageous power. The best shifting all-around street file on the market period! Typical gains of 1-3 MPG have also been reported with this file.
Studded SRL (SRL+) The one up to SRL for studded trucks. Simply adds boost over SRL for 10-15 more HP and 50-60 more FT/LBS of torque. (+135HP)
8000 Lb. Tow (8K Tow) This tow file is rated for 8000 pounds of towing without being studded. Studded trucks can tow 13000 pounds with this file. (+40HP)
Unlimited Tow Since this file maintains stock fuel parameters, it can tow whatever you want while giving better shift firmness than stock.
Extreme SRL SRL+ have you craving more? This is the file for you! (+150HP)
Custom Tune Larger Nozzle Descriptions:
XX Tow - This tow file is set up for any after market injector[...]
Custom tunes offer much more driveability and performance than the standard preloaded tunes. Already have a SCT Livewire, SCT BDX or SCT X4 but want custom tuning? Add Gearhead Automotive custom tunes to your existing SCT.
Free revisions within 30 days of purchase.
Custom Tune Stock Nozzle Descriptions:
- Street Race Lite (SRL) Awesome daily driver file (no towing) with butt kicking response, low smoke, and outrageous power. The best shifting all-around street file on the market period! Typical gains of 1-3 MPG have also been reported with this file.
- Studded SRL (SRL+) The one up to SRL for studded trucks. Simply adds boost over SRL for 10-15 more HP and 50-60 more FT/LBS of torque. (+135HP)
- 8000 Lb. Tow (8K Tow) This tow file is rated for 8000 pounds of towing without being studded. Studded trucks can tow 13000 pounds with this file. (+40HP)
- Unlimited Tow Since this file maintains stock fuel parameters, it can tow whatever you want while giving better shift firmness than stock.
- Extreme SRL SRL+ have you craving more? This is the file for you! (+150HP)
- XX Tow - This tow file is set up for any after market injectors while trying to keep the EGT's (Exhaust Gas Temps) down.
- XX Reduced Fuel - With this file it adds more boost and fuel for a more powerful street tune while maintaining drivability.
- XX Full Fuel - This file will be similar to the XX Reduced Fuel until you put your foot to the floor. Then you need to be ready for what we call "FULL FUEL". Go fast and eat cornbread!
- Modifications to your truck
- Turbo on your truck
- Remote oil cooler yes or no
- Fuel System Modifications
*Tunes are emissions compliant
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Q
Michael Davis • 03/19/2026, 9:12:07 PM
I was able to purchase the reduced fuel tune individually in the past. Am I able to the tow tune and full fuel separate or do I have to buy all 3 at once?
A
03/19/2026, 9:12:57 PM
Give our sales team a call. They'll try help you out.
Q
Oakley • 09/22/2026, 2:14:20 AM
Are these tunes available and able to work on my insight cts3+ are they able to download directly to the device?
A
09/22/2026, 12:49:23 PM
These tunes only work for SCT tuners.
5/5 Stars out of 14 Reviews
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John Medrow (Ferris, TX) | August 7th, 2025
I purchased the SRL + from gearhead through Full force and love the tune. Wayyy cleaner and truck runs a lot better than the 3 custom tunes from blessed performance.
Brian (ON) | August 6th, 2025
I received the unlimited and 8k gearheads tow tune. Service from Full Force was great. The tune is awesome, it really wakes the truck up to where it should be.
Clay (Maryland) | July 22nd, 2025
Awesome tune very responsive and work really well with gearheads atlas 80 ficm tunes on stock fuel and stock air. Highly recommend.
Jared (Missouri) | March 29th, 2025
Love the SRL tune! I’ma first time buyer of gear head tunes. I’m truly impressed with the quality of the tuning. Shifts so much better than the old tunes I had on my tuner. Truck runs great! Getting ready to test out the 8k and unlimited towing tune. The SRL has so much power longer shifts for the boost to build. Was easy to purchase and install! Definitely recommend!
PW Conn (North Babylon) | October 6th, 2024
I�ve had my SCT X4 for about 6 years using the can tunes and very pleased with the tuner and tunes. Funny thing is I don�t realize I was required to update the tuner until I received the new custom tune and I had over 4800 updates before I could load my new tune!! The SRL+ tune is UNBELIEVABLE!!! The throttle response and spool up astonishing! Matter of fact I have yet used its full potential because it�s a little overwhelmingly. Entering our crazy busy highways now I only use half throttle and very little black smoke and the 03 6.0 turbo sounds like a JET ENGINE!! Buy it!! Customer Service and speed of delivery is over the top!
Proposition 65 Warning Information -
P65Warnings.ca.gov
California Restricted
Fits: 6.7 Cummins 2010-2021 (2018-2021 Requires 40471 bypass cable) | Powerstroke 2003-2019 | Duramax 2006-2010
California Restricted
Fits: Powerstroke 1999-2019
Fits: SCT X4
California Restricted
Fits: Powerstroke 1999-2019
Fits: Livewire TS/Vision, X4, GTX, & BDX Programmer