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5 Star X4/SF4 Power Flash Tuner with 3 Custom Tunes (18-23 Mustang EcoBoost)

Item 407253
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$584.00 (each)

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      Video Review & Installation

      If you own a 2018 and newer EcoBoost Mustang and would like to go with a high-quality tune to increase the power, throttle response, and drivability of your ride, well, then the 5 Star X4 Flash Tuner Combo that we have here today would be an awesome choice. Now, this particular combination will include the very popular and easy-to-use SCT X4 handheld device, along with 3 custom tune files from the guys over at 5 Star all for right around the $600 price point. The install can be done without even popping the hood in roughly 15 minutes or so from start to finish. But if you hang with me for a bit, I'll walk you through that job later in the video. So, 5 Star tuning is a very popular choice here on the site that specializes, of course, in all things Ford, but I would even argue that they've really cemented themselves as one of the leaders in EcoBoost tuning specifically. Now, before we get into some of the details and tweaks that the guys over at 5 Star make to your ride to achieve more power and better drivability, we want to talk dyno numbers. Now, for reference sake, guys, we did use our 2018 six-speed EcoBoost that we did strap down with 93 octane in the tank and did both of our pools in fourth gear. Check it out.Baseline run using our 2018 six-speed EcoBoost Mustang with 93 octane in the tank and in fourth gear gave us 276 horsepower and 300 pound-feet of torque at the rear wheels. With the 93 octane 5 Star tune uploaded, the car is now making 280 horsepower and 392 pound-feet of torque again at the rear wheels. That's good for a peak gain of 4 horsepower and 92 pound-feet of torque over our baseline numbers and gains of as much as 61 horsepower and 100 pound-feet of torque under the curve. So, as we just witnessed, the wonderful part about the EcoBoost platform is really all of the untapped potential left on the table from Ford. I mean, honestly, it's pretty amazing what a little bit more boost, ignition timing, and some cam timing tweaks will do to wake up these little turbocharged four-bangers. And at the end of the day, the results are very impressive, especially when using good quality fuel, at least 91 octane or higher.Now, with that being said, 5 Star will also cater to different octane levels. And that is one of the really nice things about getting three different custom tunes. Now, on top of that, 5 Star does also offer a choice between a performance or economy tunes. So, with that in mind, prospective EcoBoost owners could easily grab a 93 octane performance tune when you really want to turn things up, but maybe opt for the 87 octane economy tune when you're making a long commute or maybe just want to save a few bucks at the pump. But going back to that performance tune, guys, owners can pick that up in octanes ranging from 85 octane on the low side all the way up to 94 octane on the high end of things, and even E85 if it's readily available in your area. Now, the performance tune is as advertised, right? You're looking at the biggest power gains, along with the more pronounced or dramatic change to things like throttle response, and shift points, and shift firmness on some of those 10-speed automatic cars. Now, economy tunes, on the other hand, really is going to dial all of that stuff back in favor of increased miles per gallon and will be available in all octanes with the exception of E85.But along with your choice of performance or economy tunes, your different octane levels, you also have to keep in mind here, guys, that these are custom tunes in every sense of the word. Meaning they are custom-tailored to your ride and all of your modifications. So, with that being said, if you've installed may be an aftermarket intake, downpipe exhaust, or even maybe a bigger turbo, 5 Star will be able to get you dialed in. But now we want to take the SCT device out to our EcoBoost Mustang, show you the process of physically uploading the tune to your ride, and then walk you through some of the features of the device. All right, guys, we're out here in our 2018 EcoBoost car. We're going to obviously show you how to install the tune first. Then we'll walk you through the device itself. But I do want to point out the very first thing you do when you get your tuner is to update it. Download the SCT Livewire or live update software and update your device first. Very important. Chances are there'll be a number of updates that the device will need before you can actually upload the tune to your car. So, once you do all that, grab the tuner, grab your OBD-II cable, and I'll show you how to plug it in.Generally, on these 2018 and newer cars, your OBD-II port is on the very left-hand side of your dash underneath. Find it and plug it in. With our tuner plugged in, it's going to bring us to our Main Menu. Now, in order to tune the vehicle, what you need to do is go to Program Vehicle. It's going to give you a notice. At this point, we're going to turn the key on. Obviously, this car has a push-button start. So, what you want to do here is basically have the key in the car and then just hit the engine start/stop button one time with your foot off the brake. That will turn the car into the accessory position. Now I can hit Continue. In our case, we're going to go to our 93 Base Stock tunes, it's the stock car outside of our 5 Star tune. We're going to select that. All right. At this point, there are some options here, for instance, Axle Ratio. If you do end up changing your gear ratio, you can always come in and make some changes here, same thing with tire size. Speed limiter is off currently, rev limiter, at both drive and in neutral, these are subtle things you can change. Most of the time I would just suggest you don't mess with anything here unless it's at your tuner's discretion. So, in our case, we're gonna go to Approve. [inaudible 00:05:51].It's asking us if we want to change our tire size, we do not. I'm not going to change our gear ratio. At this point too, it's also nice, it'll ask you if you want to adjust your TPMS settings. For instance, if you have aftermarket wheels and you didn't change your sensors, you can always turn the light off essentially, or maybe if you're running an aftermarket drag rig on the rear with lower tire pressure, you can adjust that accordingly as well. But in our case, we're not going to mess with that. Same thing with the rear TPMS. At this point, here we go. It's just asking us to confirm the tune that we wish to upload to our EcoBoost. We're going to hit Continue. And now, it's basically a waiting game. We're going to follow the onscreen prompts. This portion of the install does take a little while, so get comfortable here and just keep an eye on the programmer. And at that point, when it does ask you to either turn the key on or off, make sure you follow the directions accordingly. It's asking us to turn the key off, so hit the button one time. And turn it back on. And with that, our vehicle, it has been successfully tuned. Go ahead and hit Done, and you're all set. All right, guys, now that you have a better idea of actually how to tune the car, we're going to walk you through some of the basic features and functionality of the SCT X4 device right now. So, let's check it out.So, first things first, we did show you the Program Vehicle selection. That's obviously where you want to go when you want to tune your car. However, if you did ever want to return your car to stock for whatever reason, as you can see, that's where you would do that. So, going back, we'll check out the Gauges and Datalog screen. In my opinion, this is probably one of the coolest features of the SCT X4 device. This is basically the screen where it allows you to monitor and datalog, basically everything that your car is doing. For instance, on this screen, as you can see, we have it set up for things like boost, voltage, engine coolant temperature, intake air temperature, fuel trims, air/fuel ratio, and so on. But this is just basically the tip of the iceberg. You have a ton of options to, A, select your layout. So, the eight on one screen might be a little cumbersome for you to read on the fly, but even if you wanted to change your specific value, you basically click on it, select your item. And here is the list of things that you can select the monitor again, Boost, Control Module Voltage, Coolant Temperature, Intake Air Temp. As you can see, there is just a ton of stuff to monitor. Pedal Position Voltage, RPM, your fuel trims, Spark Advance, you name it, the sky's the limit.So, a lot of flexibility to what you can monitor, and again, how you can all lay it out here with the X4. And I think, again, that's probably my favorite part with this particular device. Now, if you're all done here, you can even select your layout to display in landscape mode here. So, you can, you know, flip it sideways if you wanted to. But that is totally up to you on how you prefer to display your tuner. So, again, a really big fan of the gauges, the datalog feature here with the SCT X4. And it's something I think a lot of owners will value just having it in the car at all times if you want to check out kind of what the car is doing at any given time. Well, let's go back here. We'll get out of the Datalog feature. Get on the Vehicle Functions here. And this is another valuable feature, of course, because here's where you're going to be able to read your DTC or your check engine lights. Obviously, you have the ability to clear those as well. Special Functions is going to be stuff like your keep alive memory. You can clear that. You can keep alive memory reset. And a Crank Relearn. This is a manual car. So, a lot of times when changing out your clutch or flywheel, the car will need to do a crank relearn. And that is something that you can do here with the SCT device. And that's something that every device is going to offer. So, a big thumbs up there.Coming down to Vehicle Info, not the most exciting part of the device, but it is where you can easily check out your Vin, your ECU Strategy code, which is something your tuner definitely values and needs to know, along with your ECU serial number there. We'll get out of that. This is again not the most exciting stuff, but we thought we'd show it to you. This is your Device Info. Basically, your X4, which is your device name, serial number. And this is going to give you the most recent version of the firmware that hopefully you, guys, updated like I told you to in the very beginning. Last but not the least, your settings. Pretty self-explanatory here. This is where we're going to be able to check for updates. You can do this via Wi-Fi as well if you connected accordingly, change your brightness for both day and night, your orientation, as we just showed you, portrait or landscape. This is pretty cool. You can change your theme. They have Red, Blue, and then, of course, Dark. Kind of cool there. Light Sensor basically will allow it to dim automatically based on the time of day. Power Management Mode is just going to basically shut the tuner off. Say you leave it plugged in in your car at all times, it's automatically going to power down so it's not going to drain your battery.Audio, you can turn the beeps on and off. Startup Function, this is kind of cool too. You can select this to automatically, every time you start the car, show the Gauges and Datalog feature. Instead of having to go through your menu and select everything, you can just have it default to that, which I like. And then Demo Mode, which is just basically demonstrating some of the features of the tuner. So, there you go. All right. Well, there you go, guys.That's gonna wrap up a review, install, and dyno of the 5 Star Custom Tunes and the SCT X4 Device here, available for your 2018 and newer EcoBoost Mustang at home. Guys, keep in mind for more cool products and videos like this, keep it right here at

      Product Information

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


      • Improves Horsepower, Torque and Performance
      • Guaranteed Maximum, Safe and Reliable Power
      • Includes 3 Custom Tune Files from 5 Star Tuning
      • On Screen Data Logging and Monitoring
      • Reads/Clears DTC Trouble Codes
      • Full Color LCD Display with Auto Dim Features
      • PC/Windows Compatible Only
      • Fits 2018-2023 EcoBoost Ford Mustang Models


      Power and Performance. Improve the power and performance of your 2018-2023 EcoBoost Ford Mustang with a SCT SF4/X4 Power Flash Tuner that includes (3) 5 Star Tuning Custom Tune Files. When your Mustang rolled off the assembly line, Ford programmed it to cater to the needs of the daily driver, not the performance enthusiast who adds aftermarket bolt-on modifications in the search for more power. If you have added a cold air intake, throttle body, exhaust or other performance upgrades, you'll need a custom tune to see the full power potential that these aftermarket bolt-on modifications can make.

      Three Custom 5 Star Tune Files. When you order a SF4/X4 Tuner by SCT, you aren't just getting a tuner. You're getting the tuner and 3 dyno-tested custom tune files that are written specifically for your Mustang and your particular modifications by a 5 Star Tuning calibrator. By optimizing the air/fuel ratio, adjusting ignition timing and tweaking cam timing, a 5 Star Tuning Custom Tune will squeeze out the extra power Ford left on the table. 5 Star offers two different types of tune files including Performance or Economy, you even get your choice of octane level.
      Performance Tune. This 5 Star tune will greatly enhance the power and performance of your Mustang. With improved throttle response, the Performance Tune provides much firmer and more aggressive shifts when compared to stock. This tune is available for 85, 86, 87, 88, 89, 90, 91, 92, 93, 94 and E85 octane levels.

      Economy Tune. The Economy Tune by 5 Star Tuning is for fuel savings just as the name implies. This Tune is for those Mustang owners who are concerned about fuel economy and want to increase gas mileage, but still want better than factory performance. This tune is available for 85, 86, 87, 88, 89, 90, 91, 92, 93 and 94 octane levels.

      Compact Design. The SF4/X4 Power Flash Tuner measures in at 2.7-inch wide x 5.5-inch 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-inch diagonal LCD screen with user adjustable portrait or landscape modes. The SF4/X4 also has a convenient power saving auto dim feature.
      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 and/or the Real Time Data, so you can view popular sensor data such as EGT, Air/Fuel Ratio or any other 0-5 Volt source.

      Diagnostics Tool. 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 Diagnostic Trouble Codes (DTCs) rather than paying a dealer to do the same. It's as easy as a few simple steps.

      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. This is ideal for visiting dealerships for warranty work.

      Not CARB Certified. The SF4/X4 Power Flash Tuner is not CARB certified, therefore it is not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

      Application. This 5 Star SF4/X4 Power Flash Tuner by SCT that includes 3 Custom 5 Star Tune Files is specifically designed for 2018-2023 EcoBoost Ford Mustang models equipped with the turbocharged 2.3L engine that are stock or running basic bolt-on modifications such as a Cold Air Intake, Throttle Body and/or Full Exhaust System.

      **Please Note. The Programmer ships blank from AmericanMuscle. The custom tune files will be emailed directly to the end user in approximately 5-7 business days from 5 Star Tuning. Submit your Mustang's Info Here



      5 Star SCT-7015(2018+ Mustang 2.3L)

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) SF4/X4 Device
      • (1) HDMI/OBDII Interface Cable
      • (1) Micro USB Cable
      • (3) 5 Star Tuning Custom Tune Files - via email

      Customer Reviews (11)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • EcoBoost - 18, 19, 20, 21, 22, 23