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VMP X4/SF4 Power Flash Tuner w/ 3 Custom Tunes (15-17 GT w/ Aftermarket Supercharger or Heavy Mods)

Market Price $774.99 You Save 10% ($75.99)
Our Price

$699.00

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  • Item 389986
  • MPN# 389986

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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 3 Custom Files from VMP Tuning
  • Includes Two Datalog Review (If Necessary)
  • Fits 2015-2017 GT Mustangs with Camshafts (N/A) or Aftermarket Supercharger

Review & Installation Video

Review & Install Video

Hey everybody, Justin with americanmuscle.com here with my review and Dyno test of the VMP SF4 X4 Flash tuner, loaded with three custom VMP tunes, available for your 2015 and up Mustang GT. Now the VMP option is definitely going to be a top tier tune option here at AM, and I think a good way to describe it would be a more refined product overall. It's really going to shine with those heavily modded full bolt-on setups, nitrous cars, and especially forced induction setups, and that's where VMP really earn their reputation. Now, with all that said, can you use this on a stock or a light bolt-on car? Absolutely. In fact, I would definitely say it's a solid option for you guys at home who know the VMP name and don't mind spending a few bucks extra compared to some other tune options here on the site. So why is the VMP going to be a top tier tune option here at AM? Well, they have been around in the tuning industry for quite some time now, and over that time they've of course developed their power, as we'll show you, on the Dynojet here in a little bit. But also during that time, they've really done their homework and dialed in great drivability. I think that's going to be the biggest separating factor when going with the VMP tune. It's a more refined product again. What does this mean for you? While driving the car around town, no idling issues, no surging issues, smooth throttle response. It's not going to be stalling out, things like that. And after driving the car myself I can attest to all these things. Again, around town the car idles and drives like a factory Mustang, but once you start laying into the throttle a little bit you can really feel the increased throttle response and the increased power throughout the RPM range. Now, as I mentioned at the top of this video guys, you are getting three tunes written by VMP ordered through us here at AM, a low, medium and high octane tune depending on what kind of fuel you have in your area. Now that lower octane tune, again you're going to see some benefits over your factory calibration, a little bit more power of course, definitely that improved drivability that I talked about a little earlier. But, it's not going to be as aggressive as their high octane tune which typically does utilize a little bit more timing and some other stuff to get you those bigger power gains. Also worth pointing out here guys, VMP does offer one data log revision with their tunes if necessary. As I mentioned at the top of this video again guys, you are getting a premium product here with the VMP tune and it is going to cost you a little bit more right off the bat. They do offer those slightly more in depth tunes such as your E85 tune, some nitrous applications, and even those forced induction tunes, but they will add a little bit more to the price tag when ordering. Also don't forget guys, these tunes are coming loaded on the SF4 X4 Power Flash tuner here which does have some nice notable features as well. Some of the biggies with the device do include the full data logging capabilities, nice bright full color LCD screen, the ability to read and display up to eight different values of your car at one time including RPM, intake air temperature, air fuel ratio boostings like that. It can hold up to 10 tunes at one time and it can read and clear those diagnostic trouble codes. When it does come time to upload your custom VMP tune, I think you'll find it's going to be one of the easier mods you're ever going to do to your new Mustang. We call it one out of three wrenches on the difficulty meter, but honestly I think that's being a little generous. First, you're going to locate your car's OBDII port. On the 2015 and up Mustangs, it's located on the lower left hand portion of the dash on the driver's side. Plug the tuner in and wait for it to power on. Navigate the menus, find the program vehicle tab and go ahead and select the tune you wish to upload. Follow the directions on the screen and you should be good to go in a few minutes from start to finish. We already ran our 2015 manual GT on our Dynojet behind me, established some baseline numbers and then we re-ran the car with the 93 octane VMP tune uploaded. Here's how the VMP tune performed. Baseline we're looking at 386 horsepower, 364 pound-feet of torque at the rear wheels. With the 93 octane VMP tune uploaded, the car is now making 402 horsepower, 375 pound-feet of torque, making for a peak gain of 16 horsepower over those baseline numbers and gains of as much as 24 horsepower, 24 pound-feet of torque under the curve. Breaking down the numbers a little bit guys, here's what I notice. These peak numbers are nice and all, but the big story with the VMP tune is the numbers underneath the curve, the gains underneath the curve. For instance, you're picking up a ton of torque down low in between 2,000 to 4,000 RPM, and you're picking up a bunch of power up high when it comes to horsepower. That low end torque, that's what you're going to feel red light to red light, merging onto the highway, things like that. On the flip side, that high end power is what you're going to feel when you really start winding out the car a little bit, getting into those upper RPM ranges and hitting the drag strip, things like that. Overall my final impressions of the tune driving the car, it pretty much mirrors the Dyno graph. I mean, I felt like the car was a little healthier down low and at the same time it really did come to life over 5,000 rpm. With the VMP tune, sure, you're paying a little bit more for it up front, but you're getting an established name that can pretty much handle anything from your bone stock or lightly modded GT all the way down to your big boost forced induction setup. Be sure to learn more about the VMP tunes for your S550 GT here at americanmuscle.com.

  • 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 3 custom tunes that are written specifically for your Mustang and your particular modifications by VMP Tuning. VMP Tuning even provides two 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 3 custom tune files by VMP Tuning is specially designed to fit the 2015-2017 GT Mustang's equipped with the coyote 5.0L 4 valve V8 engine and a aftermarket forced induction setup or naturally aspirated models with aftermarket camshafts.

Application Notes. For Mustangs with basic bolt-on modifications see part# 389984, for fuel or nitrous upgrades see part# 389985, for aftermarket superchargers or cam swaps see part# 389986.

**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

What's in the Box
  • (1) SF4/X4 Power Flash Tuner
  • (1) USB PC Interface Cable
  • (1) OBDII Interface Cable
  • (3) VMP Tuning Custom Tune Files
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 two datalog review from VMP Tuning
Will it fit my Mustang?
  • GT - 16, 15, 17

Intended for GT models with an aftermarket forced induction setup or naturally aspirated models with aftermarket camshafts.

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5 Questions / 5 Answers

Ask a Question

I have a 2015 mustang gt. I have added the Ford racing supercharger.(670 hp) All done by Ford. I have been whipped on the road by 2 other stangs with out a super charger. Both have told me they just have a good tune. Will this tuner help increase the performance of my Stang. If so any numbers of any increase of performance ? THX

whip

  • The VMP X4/SF4 Power Flash Tuner w/ 3 Custom Tunes will greatly increase your performance of your car. As far as numbers this will all depend on what tune you decide to go with from VMP and what all is done to your car.

    Ricky36

Helpful (1)

How do I send my car's mods to VMP so they can create my custom tune. Already purchased this kit.

RichardJ

  • You would need to sign into your AMTuning account in order to lend VMP your current mods. I will provide the link to do so below: https://tuning.americanmuscle.com/hc/en-us/requests/new

    JeffAM

Helpful (0)

Will this work with the Hellion Twin Turbo kit? Or is there another tuner I should use? I plan on using the turbo and a supercharger on a 5.0 Coyote Engine, will it work?

ElioA

  • The VMP X4/SF4 Power Flash Tuner or any other tuner can be used, however the custom tunes would not work, and a dyno tune would be required.

    Rob D

Helpful (0)

My 2016 5.0 mustang is stock other than exhaust and cold air intake. I plan on adding the supercharger later. Will this tuner work with my mustang without the extreme modifications?

BrandyH

  • Hello! The VMP X4/SF4 Power Flash Tuner is meant for a heavily upgraded mustang with at least upgraded camshafts, or forced induction.

    JacobC

Helpful (0)

If I purchase this tuner, this gets me 3 separate tunes: I am currently stock, but wish to add a supercharger in the near future. This will allow me to have a stock tune for now as well as 2 supercharged tunes later?

DanC

  • The X4/SF4 tuner comes with 3 custom tunes but can hold upwards of 10 tunes.

    KevinD92

Helpful (0)

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Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

  • Performance Gain 5 5
  • Seat Of Your Pants Feel 5 5
  • Ease Of Use 5 5
  • Bang For Your Buck 5 5
  • Preferred Tune: Race



  • 5/5

    June 20, 2016

    Excellent value

    If you are running a power adder you need this tuner. This to her along with VMPs custom tune truly woke up my supercharged 2016 mustang GT.

    N8beez

    Year: 2016 Submodel: GT

    Helpful (1)

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