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Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (99-04 GT, Bullitt)

Market Price $459.99 You Save 13% ($60.99)
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  • Item 101200G99

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    Features, Video & Details

    • SF4/X4 is the Newest Replacement for the Popular SF3/X3
    • Improves Horsepower, Torque, Overall Performance, and More
    • Comes With Two Bama V2 Custom Bama Tunes - a $150 Value
    • Includes Datalogging w/ Unlimited Revisions to Guarantee Maximum Safe, Reliable Power
    • Free Tunes for Life!
    • 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
    • What Does BAMA Offer Tunes For? CLICK HERE
    • What More Information about the Free Tunes for Life Program? CLICK HERE
    • Custom Tunes Take 2-3 Business Days to be Written
    • Fits 1999-2004 GT and Bullitt Mustangs
    • Make Sure to Also Check Out Our Newest Tuner HERE!

    Review & Installation Video

    Review & Install Video

    Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
    • Power

      1999-2004 GT and Bullitt Mustangs have dyno proven gains of 21 RWHP and 34 ft-lb's of Torque or more on Bama Custom V2 Tunes. By 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.

    2 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.
    • Perf TUNE

      Performance Tune V2

      Designed for the aggressive daily driver or weekend warrior. Bama's Performance tune provides more power than the stock tune along with increased throttle response and improved shift firmness.


      Race Tune V2

      Designed for Race use. Bama's Race tune delivers maximum horsepower and torque with aggressive transmission settings and a sensitive throttle response. 93 Octane or higher fuel is highly recommended.

    **NOTE: Programming custom tunes may take 2-3 business days plus applicable shipping time. We recommend ordering other products separately to avoid delay. 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.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    MPN# 101200G99

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) SF4/X4 Power Flash Tuner
    • (1) One USB PC Interface Cable
    Installation Info
    Tech Specs
    Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
    • Buy this Tuner & Submit your Mustang's Info
    • A Bama Performance Calibrator writes custom tunes just 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!

    Power and Performance. Now you can add dyno proven gains of 21 Horsepower and 34 ft-lb’s of Torque and improve the overall performance of your 1999-2004 GT or Bullitt Mustang with a SCT X4/SF4 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. Automatic transmissions will see an even greater gain in acceleration and drivability, as the tune also adjusts shift points and firmness.

    Increase Your Mod's Potential. From the factory, Ford programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast who adds aftermarket bolt-on modifications in search of more power. When making performance mods, you will need to recalibrate the vehicle's computer to realize their full potential. A Cold Air Intake kit alone on a 1999-2004 GT will net around a 5HP gain, but couple it with a Bama Custom V2 Tune and see dyno proven gains of 30HP and 40 ft-lb’s TQ or more.

    Free tunes for life! Every customer that purchases a Bama 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.

    Bama V2 Custom Tunes. When you order a SCT X4/SF4 Power Flash Tuner, you aren't just getting a tuner - you are getting the tuner and 2 dyno-tested custom V2 Tunes that are written specifically for your Mustang and your particular modifications by Bama Performance. Bama even includes datalog reviews to ensure your vehicle is fully optimized.

    • 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. Automatic equipped vehicles offer an aggressive shifting map to provide more aggressive transmission settings. 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. Automatic transmission settings implement entirely new shift points, torque converter changes and firmness settings designed for Track use.

    Nitrous (91, 93, E85, Race Fuel) - Our nitrous option can be added to any of our previously mentioned tune options, but only for 91, 93, E85, or Race Fuel.

    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” 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 two custom V2 tune files by Bama Performance is specially designed to fit the 1999-2004 GT and Bullitt Mustang's equipped with the SOHC Modular 4.6L 2 valve V8 engine.

    Programming custom tunes may take 2-3 business days plus applicable shipping time. 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 Model: SF4/X4 Power Flash Mustang Custom Tuner
    Manufacturer: SCT Special Features: Full color LCD display
    Built-in WiFi
    Will it fit my Mustang?

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    Questions & Answers (97)

    5 Top Rated Questions

    Will this correct speedo for a rear gear change

    • Yes this Bama tuner would be able to calibrate your vehicle for the gear change that you made to it.

    Helpful (3)

    can the Bama SF4/X4 be used to turn off theft system I have a 2003 mustang GT, I've had several occasions when car would not start due to theft system. I would like to bypass/turn off the theft system

    • We can disable this system within a custom tune upon your request.

    Helpful (2)

    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.

    • The tuner would still work fine, there shouldn't be any issues with the tune working with a direct engine repalcement.

    Helpful (2) Show 2 more answers

    Hello. I need to replace my battery. I was wondering if my tune would erase or what happens if I need to disconnect my battery?

    • The tune would not be affected if the battery is replaced or disconnected.

    Helpful (1)

    I have a bolt on 99 GT ( intake, intake plenum, intake manifold, pulleys, offroad H, 4.10 gears ) would this be able to extract more whp then my current old revision predator u7146 with canned tunes?

    • The Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes will be able to get you some more horsepower than the preloaded tunes yes!

    Helpful (1)
    Post Your Question
    10 More Questions
    Will Bama be able to tune for an Eaton TVS 1900 Supercharger on my 2002 Mustang GT? 1 answer
    I have a 2004 mustang gt with a cold air intake, 70mm throttle bottle, plenum, upper intake manifold and full exhaust with headers....what gains can i see with this programmer?? 1 answer
    I have 5.4 swap 01 mustang gt. Will this work? 1 answer
    I bought my 2001 mustang gt With a time. Will this tuner tune over that tune? 1 answer
    I understand that Bama does not tune for aftermarket superchargers but will a dyno shop be able to use this to tune for a supercharger? 0 answer
    I am about to swap a 5.4 DOHC into my 2004 GT. Will this tuner be compatible with my new setup? 0 answer
    Upon purchase would I sync it to my car then data log it and go from there? 1 answer
    Can the egr and rear 02 sensors be deleted in a tune added to this from bama 0 answer
    I have this tuner for my car, and have it tuned for a catless H-pipe. However, about every 100 miles or so, it throws a code for the cat efficiency below threshold. Is there any way to get it to stop throwing these codes? 0 answer

    Recommended For You

    Customer Reviews (100+) Write a Review

    Overall Rating 4.6

    out of 5 stars

    • Performance Gain 4.372263 4.4
    • Seat Of Your Pants Feel 4.335766 4.3
    • Ease Of Use 4.745454 4.7
    • Bang For Your Buck 4.39781 4.4
    • Preferred Tune: Performance

    • 5/5

      March 14, 2019

      Best tuner I have ever used

      This is more than your run of the mill tuner. Yeah it will hold two custom tunes but there is so much more you can see and do with the tuner. For example you can adjust spark advance, gear ratio, tire size, shift points and the list goes on. very happy with my purchase.


      Year: 2000 Submodel: GT

      Helpful (0)

    • 5/5

      March 11, 2019

      Very good

      This will have your car running right after all those bolts ons


      Year: 1999 Submodel: GT

      Helpful (0)

    • 5/5

      March 04, 2019

      02 stang

      Great tuner for the price ,Super easy to download.


      Year: 2002 Submodel: GT

      Helpful (0)

    • 5/5

      January 09, 2019


      An absolute must for anyone looking to gain instant horsepower. I followed the tune installation instructions exactly as described, did not have any issues at all. This tuner does exactly what it claims to do, and more. I am absolutely thrilled with the results.


      Year: 2003 Submodel: GT

      Helpful (4)

    • 5/5

      December 27, 2018




      Year: 2001 Submodel: GT

      Helpful (4)

    • 5/5

      December 25, 2018

      Easy to update and install

      Requested two tunes and received it in a day.. download the tunes in computer and loaded it on the tuner very easy. First time downloading the tunes and I had to update the device for the drivers. After that is was easy and just follow the direction. I will request more tunes after I purchase more mods for the 99 Mustang GT. Thank you AM!


      Year: 1999 Submodel: GT

      Helpful (5)

    • 5/5

      December 10, 2018

      Sick wicked power!!!!!!!

      If you have 2000 to 2004 mustang Gt you have to get the tune to wake up your beast!!!!


      Year: 2000 Submodel: GT

      Helpful (6)

    • 2/5

      December 10, 2018

      not worth it

      if you want speed you have to spend the money and get an actual dyno tune


      Year: 2015 Submodel: GT

      Helpful (4)

    • 5/5

      December 04, 2018

      Good gains

      I bought the Rev-X tuner and it didn’t work so I advise you to stay away from that device and go with the SCT x4. I called American Muscle and they replaced my Rev-X tuner with the x4 and I’m pleased with it. Really good gains, paired with 4.10s in my automatic GT. It corrected my speedometer, and cleared my check engine light. Shifts are really firm and crisp. I’m running the 93 tune and love it. My car used to chirp 2nd gear now it spins going into 2nd.


      Year: 2000 Submodel: GT

      Helpful (7)

    • 4/5

      December 03, 2018

      Works fine

      The process is pretty simple just email them your upgrades they loaded the tune and mail the tuner. If you are putting in injectors make sure you get the one bama can/will tune for as if not you wasted your money some where.


      Year: 2003 Submodel: GT

      Helpful (5)

    • 5/5

      November 22, 2018

      Makes a big difference

      Bought this as a present for my brother, he only has a 2 valve but it helped a lot with power


      Year: 2004 Submodel: GT

      Helpful (7)

    • 5/5

      November 18, 2018

      It’s a great tuner!

      It’s very simple to use and it definitely gets the job done you can feel the difference with the tunes


      Year: 2004 Submodel: GT

      Helpful (5)

    • 5/5

      November 08, 2018

      BAMA X4

      Picked this up for a quick HP boost and it did all that and more. My mustangs fuel seemed to be running rich occasionally causing a stall. After the ECU flash I haven't had any problems whatsoever. Getting free tunes for life makes this buy unbeatable and customer service is top notch. Firmware updates and tune updates are simple.


      Year: 2000 Submodel: GT

      Helpful (5)

    • 5/5

      October 08, 2018

      01 Bullitt

      I'm impressed. Made Bullitt come alive. Definatly notice gains rite away. To bad my driving season is almost over.


      Year: 2001 Submodel: Bullitt

      Helpful (5)

    • 5/5

      September 30, 2018

      great gains in the midrange

      Running the 93 octane tune and lots more power in the midrange than before, I can really tell the difference.


      Year: 2000 Submodel: GT

      Helpful (5)

    • 5/5

      September 15, 2018

      Bama t4 tuner

      You can definitely tell a big difference with the tunes from stock


      Year: 2004 Submodel: GT

      Helpful (4)

    • 1/5

      September 12, 2018

      Sct Tuner

      Its complete... I've wasted my money twice to have no tunes work... one on my 93, and now this.


      Year: 2003 Submodel: GT

      Helpful (7)

    • 5/5

      August 08, 2018

      Bama X4/SF4

      Great product had a little problem down loading but Bama Tech talked me though it. Will get my car Dyno tested on Aug 17. But car runs great.


      Year: 2004 Submodel: GT

      Helpful (5)

    • 5/5

      August 06, 2018

      Unleash the beast

      The tune seems to have taken a few rides to be noticed, but boy is it noticeable!


      Year: 2000 Submodel: GT

      Helpful (7)

    • 5/5

      July 23, 2018

      Im a believer

      Never really believed im chip tuning or handheld tuners butttt i was proven wrong. I have a 99 gt with very light mods and raced my friend with a 2017 v6. Before the tuner i lost by about half a car length. After the tuner i was in front by a full 2. The power is there, easy install, 100 would suggest.


      Year: 1999 Submodel: GT

      Helpful (7)

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