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Bama X4/SF4 Power Flash Tuner w/ 3 Free Custom Tunes (99-04 GT, Bullitt, Mach 1; 99-01 Cobra)

48 Reviews
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  • Item #101200G99
  • MPN #101200G99
  • Market Price $429.99
  • You Save 7% ($30.00)
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  • SF4/X4 is the newest replacement for the popular SF3/X3
  • Improve performance, mileage & 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
  • Includes 3 custom Bama Tunes - stores up to 10
  • Free Tunes for Life!
  • Free personalized ID plaque (pictured)
  • PC/Windows compatible only
Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
  • Power

    99-04 GTs have dyno proven gains of 21 RWHP and 34 ft-lb's of Torque or more on Bama Custom Tunes. By adding more fuel, optimizing the air/fuel ratio and tweaking spark timing, a Bama Custom Tune is proven to squeeze out the extra horsepower Ford left on the table.

  • Performance

    Drastically enhanced throttle response and a much more aggressive throttle map will dramatically improve your Mustang's acceleration, shaving tenths off your quarter mile time while throwing you into the back of your seat every time you smash the gas. Automatic transmissions will see an even greater gain in acceleration and drivability, as the tune adjusts shift points and firmness.

  • Personalized

    For each and every Bama Tune, we ask you 19 questions about your specific Mustang, including your unique set up and intended use, in an easy to use web form. This information allows us to write an entirely custom tune just for your specific vehicle to ensure we deliver the most power and performance possible.

  • Proven

    Our Bama Custom Tunes are developed in-house on our Dynojet 224xLC chassis Dyno. Hours of research and development through street, track and dyno testing/datalogging left us with fully refined custom tunes. The Bama Performance team has exclusive access to our inventory of parts.

3 Bama Custom Tunes:

Free Tunes For Life

Purchase a Bama Custom Tuned device, and anytime you make a change to your Mustang that requires a new tune, just let us know. Bama will create a new custom tune, and the files will be emailed straight to you.

    Street Tune

    Designed as a daily driver program that focuses in on increasing mid-range power.


    Race Tune

    This tune will get you the largest increase in performance. Designed for the "Race only use", as the timing and throttle response are very aggressive.


    Performance Tune

    This tune adds power at 3000 RPMs and higher, focusing more on the top end HP and all out performance driving.

Mustang Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) SF4/X4 Power Flash Tuner
  • (1) One USB PC Interface Cable
  • (1) One Personalized ID Plaque
Installation Info
Tech Specs
Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
  1. Buy this Tuner & Submit your Mustang's Info
  2. A Bama Performance Calibrator writes custom tunes just for your Mustang & Mods
  3. Load 'em on your Mustang and GO!
  4. As you add new mods, Bama will update your tune files for FREE!
    That's right, Free Tunes for Life!

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.

Free tunes for life!
Every customer that purchases a tuner is enrolled in the "Free tunes for life" program. Any time that you make additional mods to your vehicle, our team of SCT certified Bama Custom Tuners will create new tunes for you. Just send us a list of the part or parts you've added and we'll email the new tune files to you.

Custom Bama Tunes specific to your vehicle. When you order a tuner, you aren't just getting a tuner - you are getting the tuner and 3 dyno-tested custom Bama tunes:

  • Street (87-93 octane) - The street tune is designed as a daily driver program that focuses on increasing mid-range power. Automatic vehicles are further enhanced by making adjustments to the transmission's shift points and firmness.

  • Performance (87-93 octane) - The Performance program is designed to add power at 3000 RPMs and higher, focusing more on the top end horsepower and all out performance driving. Timing, fuel and throttle response settings are slightly more aggressive than the street tune. This is a great track tune but also works well for daily drivers that are looking for a little more "get up and go" than the street tune. The automatic transmission settings are the same as in the street tune.

  • Race (91 - 93 octane) - The race tune will ensure the largest increase in vehicle performance. Using the highest grade of fuel available in your area is mandatory. This file is designed for "Race Use Only", as the timing, fuel, and throttle response settings are very aggressive. It is so aggressive that we do not recommend it for daily driving as it may cause your vehicle to try to jump out from a stop and easily spin the tires. On automatics, we implement entirely new shift points and firmness settings to further enhance the all-out performance of the vehicle.

Nitrous (91-unleaded race gas) - Our nitrous option can be added to any of our previously mentioned tune options, but only for 91-octane unleaded fuel.

**NOTE: Programming custom tunes may take 3-4 business days. We recommend ordering other products separately to avoid delay. Some heavily modified cars are not tunable with a mail order tune. Click for details.

SCT SF4/X4 Power Flash Tuner Features:

Chip/Handheld: Handheld Custom/Strategy: Custom
Memory Size: 4 GB Custom Tunes Held: 10
Year: 1999-2004 GT, 2001 Bullitt, 2003-2004 Mach 1, 1999-2001 SVT Cobra Model: SF4/X4 Power Flash Mustang Custom Tuner
Manufacturer: SCT Special Features: Full color LCD display
Built-in WiFi
  • GT - 99, 00, 01, 02, 03, 04
  • Bullitt - 01
  • Cobra - 99, 01
  • Mach 1 - 03, 04

Not compatible with Mac software

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
Get More Outta Your Upgrades with this Tuner!

I recently had purchased an Upper Intake Plenum and 75MM Throttle Body. I expected for the throttle response to get better and a slight gain in HP. Then I added this tuner with it and got a lot more outta

Read More
Helpful (3) (0)

awesome tuner!!!

As soon as i got the tuner i loaded up the race tune... and boy did it make a difference to the power output of my 2000 gt. It deffinetly got me the max power out of all my proformance parts. Since loading

Read More
Helpful (2) (0)


Customer Photos (11) View All

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Q & A (7 Questions, 7 Answers) Ask a Question

4.10 Gears/Shift Points on an Auto i had 4.10 gears put in, i want to know does the tune itself fix the spedometer? and also does my custom tune's change the shift points change for the gears ? or do i have to go about changing the shift points on my own

BlackPony2001 Year: 2001 Model: GT

Question Resolved
Good Question (0) (0)
  • Within the tune, we will correct the shift points when notified of a gear change such as 4.10's and the speedometer will be fixed as well.

    Helpful (1) (0)

    Best Answer

    LisaS Year: 1992 Model: GT

Show 2 more answers

Would this tuner work with a 32 valve mach 1?

BobbyUthoff Year: 2003 Model: Mach 1

Question Resolved
Good Question (0) (0)
  • Yes, this tuner will work with the Mach 1 and we are able to provide custom tunes for the Mach 1 as well.

    Helpful (1) (0)

    MatthewA Year: 2004 Model: GT

Will this work after a engine swap? I own a 2000 Mustang GT 5 speed and was considering purchasing this tuner to wake it up some more. I am in the process of putting a new 4.6 SOHC motor in the car. If I buy this tuner and use it with the 4.6 already in the car will it work when I put the new engine in? The engine is just a rebuilt version of what's already in there.

gtDriver20 Year: 2000 Model: GT

Question Resolved
Good Question (1) (0)
  • As long as you are going to be using the same ECM there will be no problem. The tuner will never know the difference and you will be back on the road enjoying the good life!

    Helpful (1) (0)

    Best Answer

    fasteddie64 Year: 2006 Model: Bullitt

    Top 1 Contributor

Show 2 more answers

Reviews (48) Write a Review

  • 5 Stars .85 86%
  • 4 Stars .10 10%
  • 3 Stars .02 2%
  • 2 Stars .02 2%
  • 1 Stars 0 0%

out of 5 stars

45 Customers Recommend this Product

  • Performance Gain: 4.425532 4.4/5
  • Seat Of Your Pants Feel: 4.382979 4.4/5
  • Ease Of Use: 4.791667 4.8/5
  • Bang For Your Buck: 4.404255 4.4/5
  • Preferred Tune: Performance
Filter By Sort By
  • 5/5

    Get More Outta Your Upgrades with this Tuner!

    April 23, 2014

    I recently had purchased an Upper Intake Plenum and 75MM Throttle Body. I expected for the throttle response to get better and a slight gain in HP. Then I added this tuner with it and got a lot more outta my car. The device is easy to use and the tunes are easy to install. It was well worth the money and the name plate that comes with it was of high quality as well. All the tunes are different but are precise to how Bama Performance wants them to be. The color display really sets this unit off and allows you to change colors of the display as well. It doesn't take a genius to follow the on screen instructions either. Another great product and customer service from AM and Bama Performance.


    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Danville, IL, USA

    Helpful (3) (0)

  • 4/5

    Good if you have mods!

    May 04, 2014

    I bought this tuner for my bone stock mustang 01 gt auto. The only mod it has was a CAI. Installing it to the car was easy. The biggest difference, when the race tune is downloaded, is that the car shift at higher rpm than before. Also it shift very fast, making almost like a little power shift. On the negative side, I don't feel the 21hp promised. I would say that the only change was on the shifting. I guess when you have more mods this tuner with a custom bama tune will help you a lot, but if you are stock I think there are plenty of mods to do with 400$ buck. Thanks!


    Year: 2001 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Quebec, Canada

    Helpful (2) (0)

  • 5/5

    Buy It Now!! Dont waste anymore time!!

    April 23, 2014

    Just got it today and i have so much to say but ill make it simple. BUY IT NOW! I got 87 street, 87 perf, 93 race tunes. (its a DD) I havent even tried the 93 race but the 87 perf is worth the $400 bucks easy! Tire chirp in 2nd gear in an auto. I cant wait to run out of 87 so i can try 93 race. Stop wasting time like i did. I read every review, every forum for weeks. JUST DO IT NOW!! I drive a 04 gt vert auto, Pypes catted X, violator cat back, accufab 75mm tb


    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Robstown Texas

    Helpful (2) (0)

  • 5/5

    This is amazing tunner

    April 22, 2014

    This tunner is so easy to use and I can just pull it out anytime time weather I'm going to race someone or just cruze fast down the highway you can really feel the extra horses your getting when you tune it I would recomond it to anybody with a mustang great deal and amazing results


    Year: 2001 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Stillwater, OK, USA

    Helpful (2) (0)

  • 5/5

    awesome tuner!!!

    April 18, 2014

    As soon as i got the tuner i loaded up the race tune... and boy did it make a difference to the power output of my 2000 gt. It deffinetly got me the max power out of all my proformance parts. Since loading up the race tune all my car wants to do is go sideways in 1st through 3rd gear : ) i recomend this tuner foranyone wanting more power and better mpg


    Year: 2000 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Bend, OR, USA

    Helpful (2) (0)

  • 4/5

    Can't adjust at home

    November 18, 2014

    Good tuner but you have to call Bama every time you need to change any small parameter that you need to do. With an auto and 4.10 gears you need to fine tune your shift points. If you could change at home you could download your new set points and hit the street. Having to call Bama you cannot change anything until you download to your CPU then your tuner. Bama is quick getting tunes to you, but it would be a lot more convenient to "Git er done" yourself. Overall the 93r tunes do add a noticeable performance gain I just wish it was a more hands on device.


    Year: 2000 Model: GT Driving Style: Street / Strip SC

    Helpful (1) (0)

  • 5/5

    Night and Day Difference

    July 04, 2014

    Having enough aftermarket parts to start throwing the SES, and with the speedometer being off from gears, it was high time to get a tuner. After seeing the new X4 and it being just a little more than the X3 I figured why not. The guys at Bama were able to take care of me no problem and now my car is running better than ever. I'm finally able to make full use of all my upgrades. I got the street and performance tunes in 87 octane but haven't used anything but the 93 octane race tune. It. Is. Amazing. Throttle response is so crisp and my car can barely get out of its own way now.


    Year: 2004 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2

    Helpful (1) (0)

  • 5/5

    sct x4 tuner

    May 05, 2014

    It is a great product, easy to use, display is awesome , easy to navigate through. I would definitely recommend this product.


    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Hawaii, USA

    Helpful (1) (0)

  • 5/5

    Awesome Product!

    April 22, 2014

    A great product for the money! It did not make a huge difference in drivability or feel, but it was noticeable. The week after I installed it I did the 50th aniversary parade in pouring rain and had no issues with tire spin in race tune. The gains may be minimum at first but I look forward to the advantages I hope to see while adding to my current setup of catbacks and a CAI.


    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Kings Mountain, NC, USA

    Helpful (1) (0)

  • 5/5

    Very noticable power gain.

    April 07, 2014

    Just received my tuner. Installed the race tune,even though i use my car as a daily driver.Its awesome. Car got a little sideways shifting into 2nd. My car is almost completely stock. The only up grade has been to the exhaust(flo-master). Enjoy.


    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Denham Springs, LA, USA

    Helpful (1) (0)

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