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Bama X4/SF4 Power Flash Tuner with 2 Custom Tunes (18-20 GT)

Item 407064
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      Review & Installation Video

      Joe: Hey, guys. It's Joe from AmericanMuscle, and today we're going to be taking a closer look at the Bama X4 SF4 Power Flash Tuner with two custom tunes fitting all '18 and newer Mustang GTs. Now, this is gonna be a great option for you if you're looking to improve power and drivability of that third-gen Coyote with some great tunes as well as get some great tools that a tuner like this one can offer all at a budget-friendly price tag.So before we dive into the device itself, why don't we talk a little bit about dyno numbers? I know that's what you guys want to hear. That's what I want to talk about. So why don't we let the Bama tune speak for themselves? So what do we do for our tests? Well, '18 GT, it's a manual car. It also has the performance pack. So 3.73 gears in the rear, 93 octane for both the before and after run. And for our baseline, we put down 424 horsepower, 385 foot-pounds of torque at the rear wheels. Then we uploaded our 93 race tune. We put down 436 horsepower and 394 foot-pounds of torque, and that is good for peak gains of 12 horsepower and 9 foot-pounds of torque and under the curve, which gets even better, we put down 18 horsepower and 25 foot-pounds of torque. Some pretty respectable gains out of our Coyote there, 1825 under the curve. That's definitely something that you're gonna feel off the line. Twenty-five horsepower low down in that RPM range, that's definitely something that's going to make a difference in the driving characteristics of your '18 or newer GT. So definitely a decent upgrade there, a little bit of extra horsepower that Ford left on the table with that factory tune and on top of that you're even gonna feel a little bit better throttle response as well as firmer shifts for any automatic cars out there.Now that we know what this thing can do, let's talk a little bit about how the process is gonna go. Basically, what can you expect when you buy one of these things and what makes this different than the rest of the tuners out there? Well, when you buy this, first thing's first, Bama is going to send you a short questionnaire to fill out. They're gonna ask you some facts. Is your car an auto? Is it a manual? What's your computer code? Stuff like that. Then they're gonna ask you if you have any mods done to your Coyote. That'll include cold air intakes, bigger mass airflow sensors, cams, injectors, fuel pumps, exhaust, rear gears, bigger rear tires, stuff like that. You guys get the idea. To wrap things up, they're gonna ask you what octane levels do you want for your two tunes. Obviously we did our numbers on 93. If you're looking to get the most gains, go with 93. However, make sure that is available in your area first. If not, go with the 91. Eighty-nine is a good middle ground and 87 for all out efficiency.After Bama has all that information, it's gonna take them two to three days to actually write and nail down the tune, at which point they get emailed out to you if you plug your tuner into your PC and drag and drop some files over. It's as simple as that and then you can go over to your Mustang and upload the tunes. One thing I do want to note is this is gonna keep your stock file. When you upload a tune, it's gonna pull that off and store it on the device. So if you do ever need a revert, it's gonna be right there for you. All in all, a really rather simple process to get some custom tunes onto your Mustang. Making things even easier this is even Wi-Fi capable, so once you connect it to your network, updates are gonna flow right to the export without ever needing to plug it into a computer again.Now if you do decide to go with the X4 when you purchase this device, you'll also be enrolled in Bama's Free Tunes For Life program. Now as an '18 GT owner myself, I know very well that the modifications for Mustang never stop. There's plenty of them out there and we add to our builds over time and our tunes should be able to grow with that and that is something that Bama definitely understands. If you do get a new mod that requires a new tune, all you're gonna have to do is submit another form to Bama, again it's gonna take them two to three days but they'll email you back a brand new one, accommodating for that tune and again that's gonna be great to allow your Mustang build to continue to grow and the Bama tunes are going to continue to grow with it.Some other great features about the X4, this guy is also data lock capable, so if you do need those file revisions, you can offload files to your computer using this cable in the middle right here. It also features a full color, 3 inch LCD display, which you could do in portrait or landscape mode and that is a great feature because this offers real time vitals readouts for your Mustang. That's going to include but not limited to air-fuel ratio, intake and coolant temp, boost if you're going forced induction and ignition timing, so definitely some great readouts there to monitor the vitals of your Mustang. On top of that, it also works as a diagnostic tool allowing you to read and clear those DCTs or diagnostic trouble codes, better known to you guys probably as check engine lights.So pricing for the X4 and the two custom tunes, it's going to drop in right around the $400 mark and that makes this one of the most budget-friendly ways to get some custom tunes on your GT. Definitely well worth the money. Not only are you picking up some of that power that Ford left on the table with their factory tune, but you get some great tools on top of that, so definitely a good investment. Again, if you're just starting your build, this is going to be able to grow with you. If you have a lot of mods done, this is going to accommodate those and get the most amount of power out of your Mustang possible. Well worth the money.The install for this is going to be really, really simple. One out of three wrenches on our difficulty meter. You don't even need to open the hood to get this done. Plugs right into the OBD2 port with this cable right here. At most to get this up and running I think it'll take you about 15 minutes. We're gonna show you a clip on one of our S550s. Keep in mind, doesn't matter which S550 you're doing it on, they are all a member of the same generation and the process is going to be identical for each. So without any further ado, let's head over to the Mustang. We're gonna show you exactly how to upload a tune and what the X4 can do.Man: Guys, first up here, grab the harness included in the kit. You're gonna plug in this side to the OBD2 port located on the left side under your driver side dashboard. Once that's plugged in take the other side, pop it into the slot on the top of your X4 and we're good to get started.All right, from the main menu, I'm gonna take you guys through the process of tuning your vehicle. So select program vehicle from that main menu, continue on the street notice, put your key in the on position, don't start your engine and press continue. Now it'll give you a bunch of different options to actually modify any tune you select. We're gonna go with 93 race, but select the one that you want to flash now. At this point, it will move forward asking you if you want to make any additional changes. There's a bunch of menus relating to that, so make the changes you want. We're gonna keep our file pretty much the same that it comes with from Bama. All right, so you want to change anything you see on this menu and hit approve. Continue to special options including tire size, things like that. So did you change your tire size? We did not. Don't want to change the gear ratio and no on the TPMS settings, confirm that it will disable your preloaded tune and move forward.All right. Key in the on position if you haven't done so already and it'll save your stock tune to the device and then begin to flash. It'll load 0 to a 100 a couple of times. Just let it do its thing. Don't unplug it and don't turn the vehicle off unless it directs you to. All right. At this point it lets us know the download's complete. You can select done and you're good to go.Before we disconnect, I want to take you through some of the other features of the X4. So if you go under program vehicle gauges and data log is your next selection. You wanna make sure the key is on before you move any forward. What this will do is allow you to monitor live engine vitals on the fly at any time as long as your device is plugged in. Now it's more of a gauge pod, but there's multiple pods, multiple gauges. As you can see on the screen, we have two. They're both the same at the moment, but they are customizable. Now if you go to the right, you can data log, you can record a data log, select the data log files, select gauge layout. I'm gonna change that gauge layout to something we can monitor three pieces of information with. Now we have boost and PSI, control module voltage and coolant temp but you can change those like I said. So in EcoBoost, you might want to monitor boost, control module voltage, coolant temp, those are all customizable. If I want a change coolant temp to intake air temp, we can hit approve on that and it changes that gauge. You can monitor up to eight at a time. If you want to select the gauge layout that monitors eight, this is the max. Now it's really useful for guys who want to take care of that information on the fly and again you can record data logs, send it to your tuner, make revisions, so on and so forth. Now if you hit stop data log it takes you back to the main menu.Under that, vehicle functions, read DTC codes, clear DTC codes and special functions. Now DTC being diagnostic trouble code so if your check engine light comes on, plug this device in, read the code, get the description and then you can clear it once it's taken care of. No need to pick up any additional device. Special functions most people won't touch, cam relearn, cam reset, those we'll leave be for now. Most people aren't gonna have to worry about that.Vehicle info. This is useful if you're requesting a new tune, if you need access to your VIN number, your ECU strategy code, that's going to be on hand. Device info, similar, but for your X4 you'll have the part number, serial number, the firmware and software version, how many unlocks you have, if your status is married and so on and so forth. And then finally device settings. You can check for updates both plugged in or via Wi-Fi, which I think is very useful. Wi-Fi, if you're in range of the Wi-Fi network, you can connect that to do everything wirelessly. The only big difference here between this and the newer Rev-X is there are no cloud capabilities. So everything's done on the computer as far as downloading tunes. But if you're not too worried about that wireless aspect of it, the X4 is still a really good device.The rest of the settings are pretty much simple for any handheld, brightness, orientation. You can change the landscape, you can change the theme from red to blue, you can change to dark. There's a number of settings there. There's also audio so every time you click a button, there's a little beep. You can turn that off here, and that way you don't have to worry about that sound.Finally, startup function I think is very useful for guys who are always going to want to monitor those gauges that we looked at, the gauges and data log screen. You can select your startup to go immediately to the gauges screen. So if you have this constantly plugged into your OBD2 and you have it mounted on the windshield, this might be a good thing to take advantage of. Finally, factory reset. We hit exit, back to the main menu and that's your X4.Joe: Guys, that's gonna do it from my overview of the X4 for '18 and newer GTs. As always, for this product and more great ones like it, keep it right here at AmericanMuscle.

      Product Information

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


      • Improves Horsepower, Torque and Overall Performance
      • Guaranteed Maximum, Safe and Reliable Power
      • Includes (2) Custom Bama Performance Tunes - $150 Value
      • Datalogging with Unlimited Free Tune Revisions for Life
      • Built-in WiFi for Easy Updates
      • OBD-II Data Logging and Monitoring
      • Diagnostics Tool - Reads and Clears DTC Trouble Codes
      • Full Color LCD Display with Auto Dim Features
      • PC/Windows Compatible Only
      • What Does BAMA Offer Tunes For? CLICK HERE
      • Want More Information about the Free Tunes for Life Program? CLICK HERE
      • Designed for Stock or Basic Bolt-on Modifications
      • Custom Tune Files Take 2-3 Business Days to be Written
      • Fits 2018-2020 5.0L GT Mustang Models


      Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
      • Buy this Tuner & Submit your Mustang's Information
      • A Bama Performance Calibrator will write custom tune files specifically for your Mustang & Mods
      • Load 'em on your Mustang and GO!
      • As you add new mods, Bama will update your tune files for FREE! That's right, Free Tunes for Life!

      More Power and Better Performance. Add Dyno proven horsepower and torque gains to your 2018-2020 GT Mustang with a SCT SF4/X4 Power Flash Tuner that includes 2 Bama Custom V2 Tunes. By optimizing the air/fuel ratio, adjusting ignition timing and tweaking variable cam timing, a Bama Performance Custom V2 Tune will squeeze out the extra power Ford left on the table. Curve Gains of 32 RWHP and 39 RWTQ have been seen on bone stock Mustangs running a 93 octane Bama tune.

      Free Tunes for Life! Every customer that purchases a Bama SCT SF4/X4 Power Flash Tuner is enrolled in the Free Tunes for Life program. Any time that you make additional mods to your vehicle, our team of certified Bama Calibrators will create new tunes for you. Just send us a list of the part or parts you've added and we'll upload your new tune files to the cloud.

      Bama V2 Custom Tunes. When you order a SF4/X4 Power Flash Tuner by SCT, you aren't just getting a tuner. You're getting the tuner and two Dyno-tested custom V2 Tunes that are written specifically for your Mustang and your particular modifications by Bama Performance. You even get your choice of octane level. Bama includes datalog reviews to ensure your vehicle is fully optimized. Bama offers your choice of two different tunes including Performance or Race.

      Performance V2 (87-93 Octane) - The Performance Tune offers a seamless blend of power, performance and drive-ability. Improving the overall driving experience of your Mustang, the Bama Performance Tune improves vehicle acceleration, increases power throughout the entire RPM and improves throttle response with revised timing, fuel and VCT maps. This tune is suggested for the aggressive daily driver that is looking for more "get up and go."

      Race V2 (91-93 Octane, E85, Race Fuel) - The Race Tune is designed for maximum performance and ensures the largest increase in vehicle performance. Using the highest grade of fuel available in your area is mandatory as timing, VCT, fuel, and throttle response settings are very aggressive. This file is designed for "Race Use Only."

      Technical Note About Fuel. Use of E85 will require larger fuel injectors such as Injector Dynamics ID1300 or Ford Racing 47lb/hr Injectors. Unleaded race fuel can also be used, but Stoichiometric points must be supplied.

      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.

      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. Once setup with your Wi-Fi password, the X4 will download the latest firmware updates via the internet.

      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 Bama SF4/X4 Power Flash Tuner by SCT with 2 Custom V2 Tune Files by Bama Performance is specifically designed to fit all 2018-2020 GT Mustangs equipped with the 4V DOHC 5.0L V8 Coyote engine, including automatic and manual transmission models 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 SCT SF4/X4 Power Flash Tuner ships blank from AmericanMuscle, the custom tune files will be emailed directly to the end user within 2-3 business days from Bama Performance. Heavily modified cars are not tunable with a mail order tune. Click for restrictions. Membership in the Tunes for Life program is valid for as long as you own the car that was originally tuned and is non-transferrable.

      Bama Performance

      Fitment: 2018 2019 2020 Details

      MPN# 407064

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (11)

      Write a Review

      Ratings Summary

      4.2 out of 5 overall rating from 11 customers

      • March 17, 2020

        5 2019 GT - ReeseB

        Awesome performance

        I wasn't sure that it would make much of a difference with just a tune but I was wrong. You can tell a big difference.

        Helpful (0)
      • February 07, 2020

        3 2019 GT - Michaels

        Power tuner

        I purchased it in conjunction with a cold air intake, tried to get all the required information on the car to do a tune, and then finally obtained what is alleged to be said tune. BUT I can't download the tune for some reason, could not understand the computer data mumbo jumbo and didn't need it after all. I gave up and DO NOT ask for help from Bama or AM. Not a bad buy just one I was not suited for.

        Helpful (0)
      • December 09, 2019

        2 2018 GT - mrblackbond

        I'm honestly kind of regretting this...

        I was struggling to make a choice as to who I wanted to tune my car and I chose this brand/device because of the free-tunes-for-life program. I'm honestly VERY disappointed. 1: Firstly, they do NOT offer an Apple/Mac-compatible application for working with your maps. Huge downfall as I do not own a Windows PC. 2: Once I borrowed a friend's laptop, I had the hardest time updating the device - Had to find and locate the drivers THEN update the application THEN the device. So time consuming and annoying. 3: They emailed me two tunes "performance" and "race" and didn't bother explaining what to expect with each or when it would be appropriate to install either. They also mixed up the tunes and sent me a "performance tune" that their application loaded as a "race tune" (they did fix after I brought it to their attention) 4: LASTLY, the car is SOOOO jerky now in Sport modes. Sure there is noticeable power gains that feels really great but coupled with this 10R80 trans, this tune is SO jerky when shifting and even when in the lower gears just cruising, that I am considering disabling and going back to my stock map. I wish I could get my money back on this honestly. Rated this a 2 ONLY because they were able to extract more power out of my otherwise stock car (x pipe and drop-in air filter only).

        Helpful (3)
      • October 22, 2019

        5 2018 GT - almostsane1


        This is a great investment. The tune is written for your car and new tunes are free for life. Can feel the extra power in my mustang GT and The new shift points.

        Helpful (3)
      • September 04, 2019

        5 2018 GT - 1slow5o

        Extra horses all stock

        Once I received my tune, I loaded it up. I could feel the added horsepower under the hood. Throttle responce was improved. I am stock with tune only.

        Helpful (3)
      • August 17, 2019

        1 2018 GT - Dwhite

        Ok I guess

        The scanner comes in handy since I have to clear the codes every few day cause the tune shuts my car down I only drive the car on the weekends and it's like clockwork I have to pull over clear the codes and start again the car is brand new about 1k miles when I put the tuner on and it did make the car feel a lot faster but not worth the hassle of clearing it all the time

        Helpful (7)
      • August 08, 2019

        5 2018 GT - EL

        Bama tuner

        If you're looking for an easy to use to tuner that will turn your Mustang into powerhouse. Look no further. I promise you will not be disappointed.

        Helpful (4)
      • July 17, 2019

        5 2019 GT - Fantasma

        Easy to work with

        Comes with a jlt tune already so if ur going with a jlt cold intake this tuner comes real handy very easy to use didnt really take long either

        Helpful (2)
      • July 10, 2019

        5 2018 GT - Liltikr

        Bama power flasher

        Car finally throttle response and the power difference is also great

        Helpful (0)
      • May 14, 2019

        5 2018 GT - JakeT

        Definitely my goto from now

        I have a few people in my family that own mustangs, all with different tune companies and tuners. I personally, liked the simplicity of the tuner, yet was a tad weary of BAMA, since most people never really get their tunes. So, I decided to try it out, after getting the tune requests out, I will say it did take a bit to hear back from them, but after the first word back from them it was smooth from there. After using their tune with my CAI, I can easily tell a performance boost.

        Helpful (6)

      Questions & Answers (9 answers)

      5 Top Rated Questions

      Can this turner turn off the 250km/hr speed limit?

      • Bama can indeed adjust the speed limiter, yes.

      Helpful (1)

      Can I do data logging and send them the data log and have Bama tune off that and have revisions of those tunes everytime I add something to the car?

      What's a popcorn tune? Just curious. I'm considering a, tune only, for my 2018 GT 10R80.., no other bolt-ons. Factory CAI with a drop-in reusable air filter. This Bama X4/SF4 seems to be what I need. What do you think?

      • A popcorn tune is another phrase for a ghost cam tune. To explain what that is, basically it's just a tune that makes it sound like you have a really meaty set of cams.

      Helpful (0)

      Can i switch to Lund with this tunner down the road? Or is it locked?

      Can you get a custom popcorn tune as well?

      • Bama can indeed offer a popcorn tune

      Helpful (0)
      Post Your Question
      4 More Questions
      Can I pay an extra fee or something to use this on my Mustang and F150? I think I've seen that before from SCT. 1 answer
      Can they do the tune as an e85 or flex fuel or will then be an extra cost. What is the max number of tunes can the tune hold? 1 answer
      All I have is a cold air intake and I normally use 89 octane fuel. Does this tuner come with a pre loaded custom tune that I can use or will I have to get a custom tune made and sent to me? 1 answer
      how do u get the free tunes for life program i bought this tuner worked well but now i wanna request a tune and i noticed that bama does free tunes but im not sure how that works it says for memeber only how do u become a member if someone could explain thanks 1 answer

      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
      • (2) Bama Performance Custom Tune Files - via email

      Will It Fit My Mustang