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SCT X4/SF4 Power Flash Tuner (96-20 All, Excluding 2020 GT500)

Item 101635
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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • SF4/X4 is the Newest Replacement for the Popular SF3/X3
      • Pre-Configured SCT Tunes
      • Improves Horsepower, Torque, Overall Performance, and More
      • On Screen Data Logging and Monitoring
      • Reads/Clears DTC Trouble Codes
      • Full Color LCD Display with Auto Dim Feature
      • Built-In WiFi for Easy Updates
      • PC/Windows Compatible Only
      • Works on all 1996-2020 Mustangs


      Increased HP and Torque. From the factory, the manufacturer programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast. After loading a SCT pre-configured strategy tune on a vehicle, even a bone stock, unmodified Mustang will realize noticeable gains in Horsepower, Torque, and Fuel Economy.

      Increase your mod's potential.
      Factory computer settings are calibrated for the original factory components. When making performance modifications, you need to recalibrate the vehicle's computer to realize the full potential that these modifications can achieve.

      Compact Design. The SF4/X4 Power Flash Tuner measures in at 2.7” wide X 5.5” tall making it much smaller than the original SF3/X3 for easy storage in your center console or glove box. The cord is detachable and there is no battery or power supply needed. It uses the power from your vehicle's diagnostic port or computers USB connection.

      Full Color Display. The SF4/X4 Power Flash Tuner features a full color 2-3/4" diagonal LCD screen with user adjustable portrait or landscape modes. The SF4/X4 also has a convenient power saving auto dim feature.

      Built-in WiFi. The SF4/X4 Power Flash Tuner is now WiFi-capable meaning you will no longer have to plug it into your PC/Windows computer to receive the latest SCT firmware updates.

      Diagnostics. The SF4/X4 Power Flash Tuner can also be used as a diagnostic code reader. Save yourself hundreds of dollars each year by reading and clearing your own trouble codes rather than paying a dealer to do the same. Its as easy as a few simple steps.

      On Screen Data Logging and Monitoring. With a full color LCD display, the SCT SF4/X4 Power Flash Tuner makes it EASY to read the Built-In Data Logging or Real Time Monitored Vehicle Data, view popular sensor data such as EGT, Air/Fuel Ratio or any other 0-5 Volt source.

      Easy to load; easy to restore. When you load a SCT pre-configured strategy tune on the vehicle, the tuner automatically stores your vehicle's factory settings. To return the vehicle to its factory settings, just plug the tuner back in, select the option to restore the factory settings, and you're done.

      SCT SF4/X4 Power Flash Tuner Features:

      SCT SF4/X4 Adjustable Parameters:

      • WOT Fuel Adjustment
      • Idle RPM
      • Spark Adjustment
      • Transmission Shift Points
      • Axle Ratio
      • Fuel Injector Size
      • Tire Size - Rev / Mile
      • Air Intake Selection
      • Cooling Fan Temps
      • Traction Control On / Off
      • Rev / Speed Limiters
      • Two Step On / Off RPM
      * Not all adjustments available on all vehicles.

      Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

      MPN# 7015

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 100+ customers

      • April 02, 2020

        5 2012 GT - Jamesp80

        Night and day difference

        I recieved my tuner last night. Woke up first thing this morning and updated the tuner via wifi. This process was very very easy. It took about an hour to update. I then uploaded the tune to my car. I drive a 2012 mustang GT. 100 stock with the exception of a kandn filter and mufflers. Stock air box, stock exhaust pipe diameter. It took about 5- 10 mins to save my stock tune and upload the new 91octane tune. This is like driving a different car!! Far more power, tight shifts, I'm chirping the tires through 3 gear. Very easy to install and well worth the money.

        Helpful (0)
      • January 27, 2020

        5 2015 GT - ShelbyDude2015


        This Tuner woke up the sleeping beast. Awesome power!!!

        Helpful (2)
      • January 24, 2020

        5 2005 GT - Heellllpppppp98

        Sct x4 review

        Great tuner. Just go to a real tuner. The tunes it comes with are trash if you have more then a intake It’s fast and super easy to use. And datalog with

        Helpful (0)
      • January 08, 2020

        5 2014 V6 - Brayton

        Do it!

        I had been wavering on this purchase for awhile. Now I am thrilled I followed through. The throttle response is now amazing, and it feels like a brand new car. It has really opened up the V6. Don’t think about it, just buy it!

        Helpful (3)
      • October 20, 2019

        5 2014 V6 - Gking13

        Sct x4

        Very nice and works really great. Super easy install just make sure you update the device before installing there was about 470 files that needed to be updated FYI. Big difference shifts kinda hard but I’m going with a mpt custom tune to really get the full potential of my car.

        Helpful (4)
      • October 07, 2019

        4 2000 GT - Bman95

        Good choice

        This was a good purchase not a lot of difference bottom end but a definite power increase mid to high rpm. I have a 2000 gt with a few bolt ons

        Helpful (0)
      • September 05, 2019

        4 2016 EcoBoost - Nev

        Ecoboost question

        Anyone install this for a16 ecoboost? Read a lot of reviews of good and bad and debating to install this or not...

        Helpful (51)
      • August 03, 2019

        5 2003 Mach 1 - Sal

        Great product

        Must have to bring out the true power of any vehicle. Shipping can in ahead of schedule, and I had a positive experience on the website. Highly recommend SCT/X4.

        Helpful (2)
      • July 15, 2019

        4 2000 V6 - Ranger1967

        Be careful on racing tune

        This only happened to me once so far. I was on the freeway running the high octane racing tune, when the car decided to go markedly faster on it's own. (I wasn't pressing the accelerator.) I was up a good 30 mph faster than my cruising speed of 55 mph, when just like that it backed down to normal on it's own. This could be a problem if you don't keep your head and panic. Be careful it may happen to you. Other than that good product, and racing tune definitely can smoke some tires off a light.

        Helpful (9)
      • July 15, 2019

        1 2015 V6 - Kate


        This ruined the computer in my car. I read the reviews and I didn’t see any other reviews saying something similar to this but I installed the the tuner step by step and it wouldn’t drive right (when I was accelerating the brakes were being applied and forcing me to slow down) after to the point where I had to replace the entire computer in my car. Very disappointed. Wish I never bought it it cost me time and money.

        Helpful (37)

      Questions & Answers (179 answers)

      5 Top Rated Questions

      What is the difference/benefit of the SCT tuner vs. the BAMA tuner? They look exactly the same...?

      • The SCT SF4/X4 Power Flash Tuner does not come with custom tunes whereas the Bama tuner comes with custom tunes and free tunes for life.

      Helpful (41)

      What's is the difference between the bama tuner x4 and the sct sf4? Do both have free tunes for life? I would like to know the difference before I purchase either one thanks

      • The tuners themselves are the same, but the BAMA x4 sf4 tuner is included with our free tunes for life program, whereas the SCT tuner of the same style does not come with free tunes for life.

      Helpful (10)

      how many tunes can this device hold if any?

      • The SCT SF4/X4 Power Flash Tuner would be able to hold up to 10 tunes on the device.

      Helpful (9)

      I recently purchased this the SCT SF4 tuner and during set up it "asks" if the car has a Steeda CAI. I am considering purchasing the Steeda CAI and I was wondering if tunes are already pre-installed on the tuner, or do I have to get custom tunes. Please let me know. Thanks!

      • With the SCT tuner, this will come with preloaded tunes that you can download onto your car for what mod you have. However, since you bought the tuners from us you will be automatically enrolled in Bama's free tunes for life if you wanted to get a custom tune as well! Sincerely,

      Helpful (9)

      Will this tuner get better use of any CAI kit? Assuming that it would program the computer to allow for more airflow in the intake.

      • Any aftermarket cold air intake will benefit and create more power with an new computer tune to the motor. Allowing the vehicle to pull more air will overall make additional power even if you cold air intake does not require a tune.

      Helpful (8)
      10 More Questions
      Will this tuner get better use of ANY CAI kit? Assuming that it would program the computer to allow for more airflow in the intake. Also the CAI I have installed doesn't require a tune, I was just wondering if it would help get more power from it. 1 answer
      I bought this tuner for my 98 gt awhile back. i recently picked up a 96 cobra im wondering if its compatible if i return my 98 back to stock? 1 answer
      How many vehicles can i tune with this tuner? And are all sct tuners have the same configuration as far as how many vehicles? 1 answer
      Would this be a good tuner for a 2011 V6 with K N intake BBK 73mm throttle body and shorty headers and a Borla cat back ATAK system 1 answer
      Does this have Ghost Cam tune on it? Or do I have to download it from online to the tuner? 1 answer
      So I have a late model 95 V6, which has factory OBDII, would this work on mine? 1 answer
      Does this tuner come with free tunes for life like the Bama tuner? Thanks. 1 answer
      Hello. I just bought a 2003 Mustang GT, and was told it has a sct tune on it, and to run no lower then 91 octane, now I would like to buy a Bama tuner, how could I go about getting my car back to stock specs, and go from there. Thanks. 1 answer
      I have a 07 gt mustang would I need any special intake or would this tune be fine by itself? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) SF4/X4 Power Flash Tuner
      • (1) One USB PC Interface Cable

      Tech Specs

      Memory Size:4 GBCustom Tunes Held:10
      Year:1996-2017Model:SF4/X4 Power Flash Mustang Custom Tuner
      Manufacturer:SCTSpecial Features:Full color LCD display
      Built-in WiFi

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