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VMP X4/SF4 Power Flash Tuner w/ 1 Custom Tune (15-17 GT)

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Features, Video & Details

  • SF4/X4 is the Newest Replacement for the Popular SF3/X3
  • Improves Horsepower, Torque and Overall Performance
  • 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
  • Includes 1 Custom File from VMP Performance
  • Includes Datalog Review (If Necessary)
  • Fits 2015-2017 Ford GT Mustangs

Review & Installation Video

Review & Install Video

  • Buy this Tuner & Submit your Mustang's Info Here
  • A VMP Tuning Calibrator will write custom tune files specifically for your Mustang & Mods
  • Load 'em on your Mustang and GO!

Increases Horse Power and Torque. From the factory, Ford programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast who adds aftermarket modifications in search of more power. That is why a custom tune file is so important, by optimizing the air/fuel ratio, adjusting ignition timing and tweaking variable cam timing, a VMP Tuning Custom Tune will squeeze out the extra power your aftermarket performance mods have to offer.

VMP Custom Tunes. When you order a SCT SF4/X4 tuner, you aren't just getting a tuner - you are getting the tuner and 1 Custom Tune that are written specifically for your Mustang and your particular modifications by VMP Tuning. VMP Tuning even provides post sale datalog review (if necessary) to assure your Pony is running healthy and strong.

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 your custom 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.

Application. This SCT X4/SF4 Power Flash Tuner with 1 Custom Tune File by VMP Tuning is specially designed to fit the 2015-2017 GT Mustang's equipped with the coyote 5.0L 4 valve V8 engine.

Three Options Available. Option one is for stock GT's with or without basic bolt-on upgrade modifications such as a Cold Air Intake, Throttle Body and/or Full Exhaust System. Option two is for GT's that are running Nitrous, E85 or have Mild Performance Modifications such as upgraded fuel injectors or fuel pump. Option three is for GT's that are running an aftermarket forced induction setup or naturally aspirated models with aftermarket camshafts. Please select your application from the options listed above.

**Please Note: The SCT SF4/X4 Tuner ships blank from AmericanMuscle, the custom tune files will be emailed directly to the end user within 5-7 business days from VMP Tuning.

Fitment: 2015 2016 2017 Details

CA Residents: Warning: California's Proposition 65

What's in the Box
  • (1) SF4/X4 Power Flash Tuner
  • (1) USB PC Interface Cable
  • (1) OBDII Interface Cable
  • (1) VMP Tuning Custom Tune File
Installation Info
Tech Specs

SCT SF4/X4 Power Flash Tuner Features:

Chip/Handheld: Handheld Custom/Strategy: Custom tunes by VMP Tuning
Memory Size: 4 GB Custom Tunes Held: 10
Year: 2015-2017 GT Model: SF4/X4 Power Flash Mustang Custom Tuner
Manufacturer: SCT Special Features: Includes datalog review from VMP Tuning
Will it fit my Mustang?

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Customer Photos

Questions & Answers (2)

2 Top Rated Questions

Is this tuner locked to VMP only or would i be able to use other tunes?

  • The VMP X4/SF4 Power Flash Tuner with 3 Custom Tunes will be run on the SCT platform, this means that any other SCT certified tuning shop can create tunes and send them out for use on this device. It will not be locked for use exclusively with VMP tunes.

Helpful (0)

Does this come with tunes pre loaded?

  • The VMP X4/SF4 Power Flash Tuner w/ 3 Custom Tunes does not come pre-loaded with tunes. The tuner will ship blank and the customer tune will be emailed to you directly from VMP, typically the lead time from VMP is 5-7 business days.

Helpful (0)
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Customer Reviews (3) Write a Review

Overall Rating 3.7

out of 5 stars

  • Performance Gain 4.666667 4.7
  • Seat Of Your Pants Feel 4.333333 4.3
  • Ease Of Use 5 5
  • Bang For Your Buck 5 5
  • Preferred Tune: Performance

  • 1/5

    March 13, 2018

    Call vmp for clarification before ordering

    First I want to say that this issue is not an issue with vmp or even the AM customer service specifically. I have ordered many parts and services from AM with few to almost no issues. This however was big enough to me that I would give it no stars if I could. My wife ordered the gt350 intake manifold for me along with some other things while I was on deployment. I just returned home and was overjoyed to see she had them installed so I wouldn’t have to (she doesn’t know it’s all part of the fun for a car enthusiast), but it had been 2 weeks since she filled out the tune request and still no tunes. I contacted VMP, who were very helpful, and found out that the manifold was actually considered a pretty big upgrade and hence would not be considered covered in the level 1 tuning package. I had to PayPal another $100 to them to get my tunes. Again, not upset with VMP, either my wife or I would have paid the extra money but it would have been nice to know upfront. The description of what each tuning level entails here in the descriptions is very broad and needs to be more detailed so that people know what to or is expected. Now I’m still sitting here with parts installed and no tunes. Lessons learned were to order specific tunes directly from the tuner that way there is no breakdown in communication.


    Year: 2017 Submodel: GT

    Helpful (4)

  • 5/5

    March 01, 2018


    Great product. Really woke my 2017 mustang up. Throttle is better as well as my gas mileage. Works as should maybe better. Would definitely recommend


    Year: 2017 Submodel: GT

    Helpful (0)

  • 5/5

    October 10, 2017

    tune review

    Very nice product and very good custom tunes and makes the mustang very aggressive and sound amazing


    Year: 2016 Submodel: GT

    Helpful (2)

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