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Ford Performance 3.73 Gears and BAMA X4 Tuner (99-04 V8)

Market Price $699.99 You Save 11% ($80.00)
Our Price

$619.99

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  • Item 101657
In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Money Saving Combo Kit
  • Bama SF4/X4 Tuner with 3 Custom Tunes
  • Free Tunes for Life
  • Ford Racing 3.73 Gears - 8.8"
  • Motive Gears 8.8" Rear End Installation and Bearing Kit
  • 2 Quarts Royal Purple Max Gear 75w90 Gear Oil
  • 1 Quart of Ford Racing Friction Modifier
  • Includes datalog reviews to ensure your vehicle is fully optimized
  • Free Personalized ID Plaque (Pictured Above)
  • Fits 1999-2004 V8 Mustangs
Bama Performance

The Gears
The Gears

Improve ET's and Low End Torque. Installing a set of steeper rear gears is a great way to get more low end grunt off the line and lower your ET's at the same time. Ford Racing Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion making them perfect for street, road, or race use. More info about these gears - Here

The Tuner
The Tuner

Power. Performance. Personalized. The SCT Power Flash Tuner features Bama Performance custom tunes that are written specifically for your Mustang. Our tunes are based on a 19 point questionnaire to deliver the most power and performance possible for your Mustang’s modifications. All Bama Performance tunes are tested and proven on our very own in-house Dynojet 224xLC Chassis Dyno. More info about this tuner - Here

The Combo
The Combo
  • More horsepower and torque
  • Better throttle response
  • Enhances existing modifications
  • Custom Dyno proven tunes
  • Free Tunes for Life
  • Free personalized ID plaque


Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time as your gears are installed, see drop down option above.

**NOTE: 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. Membership in the Tunes for Life program is 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

What's in the Box
  • (1) SF4/X4 Power Flash Tuner
  • (1) One USB PC Interface Cable
  • Ford Racing 3.73 Gears
  • Motive Gears 8.8" Rear End Installation and Bearing Kit
  • (2) quarts Royal Purple Max Gear 75w90 Gear Oil
  • 1 quart of Ford Racing Friction Modifier
  • Free Tunes For Life
Installation Info
Tech Specs
Bama Custom Tuning at AmericanMuscle. Power. Performance. Personalized. Proven
Ordering a Custom Tune?Whether it's a new mod or just an octane change on your existing tunes, our Bama Performance calibrators have got you covered in a few easy steps:
  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!

More Power. Do you want the ultimate power package for your Mustang? Well look no further, because it has arrived. AmericanMuscle introduces the kit that will launch you into quarter mile times that you have never dreamed of possible; designed to give the best possible performance upgrade for your car, without having to empty your wallet.

Kit includes: (click on each item for full product description)

Increased HP and torque. From the factory, the manufacturer programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast. After loading the custom Bama Tune on a vehicle, even a bone stock, unmodified Mustang will realize noticeable gains in HP, Torque, and Fuel Economy.

Increase your mod's potential. Factory computer settings are calibrated for the original factory components. When making performance modifications, you need to recalibrate the vehicle's computer to realize the full potential that these modifications can achieve.

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.

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 in on increasing mid-range power. It does give up a few HP at higher RPMs, but that's why there is a Performance file. 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 only Use" as the timing, fuel, and throttle response settings are very aggressive. in fact, the adjustments are 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. Finally, with the 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.

Easy to load; easy to restore. Not only are the custom tunes easy to load on your vehicle, it is just as easy to restore your factory settings. 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.

SCT SF4/X4 Power Flash Tuner Features:

  • The SF4/X4 by SCT is the newest replacement for the popular SF3/X3
  • Reads / Clears DTC Trouble Codes
  • On screen data logging and monitoring
  • Full color LCD display with auto dim feature
  • Built-in WiFi for easy updates
  • PC/Windows compatible
  • Custom tuning applications for 1999-2004 GT, Bullitt, Mach 1 and SVT Cobra Mustangs
  • Click for Instructions on Loading Custom Tunes to your Mustang.

Approximate RPM for 1999-2004 GT


Manual
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3888 5443 6998      
2 2301 3221 4141 5061 5981 6902
3 1518 2126 2733 3340 3948 4555
4 1150 1610 2070 2531 2991 3451
5 782 1095 1480 1721 2034 2347


Automatic
Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
1 3267 4573 5880      
2 1783 2496 3209 3922 4636 5349
3 1150 1610 2070 2531 2991 3451
4 805 1127 1449 1771 2093 2416
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 99, 01, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

Fits Mustangs equipped with a 8.8" rear end only

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
A must have!

Great product! A must have! Price is a little high but well worth the gain. If you are thinking about it, Get It!

Helpful (1)

5/5
This thing rocks!!!

This is by far the best seat of the pants upgrade I've done yet... Race tune is AWSOME really wakes up the 4.6, I choose performance for everyday driving.really helped transmission shift points as well. ...

Read More
Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 100+ Reviews

Customer Photos

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37 Questions / 10 Answers

Ask a Question

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

kkeymanz

Helpful (1)
  • We can disable this system within a custom tune upon your request.

    MatthewA

Can i data log AFR and Boost on my X4?

Bstang2

Helpful (1)
  • Yes. The tuner can accept analog inputs such as AFR and Boost signals for data logging.

    MatthewA

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

Helpful (1)
  • The tuner would still work fine, there shouldn't be any issues with the tune working with a direct engine repalcement.

    Ryan

Show 2 more answers

Whats the difference? What is the difference between this kit and the kit for 35 dollars?

ncstang06

Helpful (1)
  • This kit comes complete with everything you need for a full rebuild: bearings, shims, crush sleeve, etc... The $35 kit is a basic kit that is the same as the more expensive version, but there are no bearings included. We highly recommend getting the complete kit and replacing all your bearings and shims at the same time to prevent any costly problems down the road. It's better to replace them all at once, rather than having to tear the car apart again just for a bearing gone bad.

    LisaS

Show 2 more answers

I have a 2000 mustang GT and I was wondering if I got this tuner kit how would I go about getting it tuned I have never done one before so if anyone could help me out how to go about it . It would be great Its the BAMA x4 stage tuner kit . Thanks

KennyA

Helpful (0)
  • Hello! Once you receive your Bama X4, you will just have to plug the tuner into your car and follow the prompts on the X4 to load the new tune on to your vehicle. For more details on the process, give us a call at 1-877-574-0821

    VincentV

I have a 2000 mustang GT and I was wondering if I got this tuner kit how would I go about getting it tuned I have never done one before so if anyone could help me out how to go about it . It would be great It the BAM 3 stage tuner kit .

KennyA

Helpful (0)
  • Hello! Once you made the purchase, you would receive an email from Bama asking you to fill out your custom tune sheet. They would then load your custom tune on to your tuner and send it out. From there all you would have to do is plug in the tuner and follow the on screen prompts to load the custom tune file on to your vehicle. For more details on the process. Give us a call at 1-877-574-0821

    VincentV

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Customer Reviews (100+) Write a Review

Overall Rating 4.8

out of 5 stars

  • Performance Gain 4.623673 4.6
  • Seat Of Your Pants Feel 4.539455 4.5
  • Ease Of Use 4.833685 4.8
  • Bang For Your Buck 4.463376 4.5
  • Preferred Tune: Performance



  • 5/5

    March 17, 2017

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

    Bama tuner

    Love it!!! Really woke up my 2000 gt! Definitely gonna purchase another one for my 97 cobra!!

    31

    Year: 1997 Submodel: Cobra

    Helpful (1)

  • 5/5

    March 16, 2017

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

    Wonderful tuner!

    I really wanted 2 step for my car so I could get some good launches. All I had to do to get 2 step with my custom tune was to email them and put tjat I wanted 2 step in the comment section of your mod list when you submit a tune. Great company!

    JordanB

    Year: 2001 Submodel: Bullitt

    Helpful (1)

  • 5/5

    March 14, 2017

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

    Bama tuner

    Should be your first upgrade if you have an automatic. Excellent product.

    Mrouss

    Year: 2001 Submodel: GT

    Helpful (1)

  • 5/5

    March 14, 2017

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

    Great upgrade!

    Installed into my 01 GT 5-speed. I already had airaid intake, 70mm throttle body, CandL intake elbow, shorty headers, 03 cobra mid pipe, magnaflow exhaust, 3.73 gears. Woke the car up! Actually surprised at the difference it made. Another nice benefit, now my speedometer reads correctly due to the 3.73 gears. They also turned off traction control for me. All in all, and very nice upgrade!

    Pete

    Year: 2001 Submodel: GT

    Helpful (1)

  • 5/5

    March 07, 2017

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

    This tuner worked flawlessly!!

    Ordering could not be easier and without a doubt, a noticeable increase in throttle response, acceleration and shift firmness. I highly recommend this tuner to any with bolt-ons. No problems at all. Great product and service.

    2002stang

    Year: 2002 Submodel: GT

    Helpful (1)

  • 4/5

    January 20, 2017

    Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (03-04 Cobra)

    Great product

    I installed a few aftermarket parts and my ecu wasn't cooperating. Got this guy and it fixed basically everything. My rpm's climb faster, better throttle response, plus it has active gauges which is helpful. Only gave it a 4 star because of the price.

    Christian

    Year: 2003 Submodel: Cobra

    Helpful (1)

  • 5/5

    January 18, 2017

    Review from Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (03-04 Cobra)

    Great Tuner and Support

    Got this for a 2003 Cobra. This with a 2.8 pulley really woke the car up. Highly recommend this tuner. Bama answered all my questions.

    dan

    Year: 2003 Submodel: Cobra

    Helpful (1)

  • 5/5

    January 14, 2017

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

    Immediately noticeable gains!

    While the updating process was a little difficult (notable driver issues with Windows 8.1), the tune itself only took about 5 minutes. It backs up your stock tune automatically when you choose which tune you want to run. Mine only came with an 87 octane performance tune but with the free tunes for life I can get the street or racing tunes. I was previously running a stock tune on my 2000 GT with a FRPP Intake Manifold, Airaid CAI, and SLP Loudmouth II catbacks. My car used to bog down/choke a little at idle even after replacing my IAC, new plugs, etc and after the tune, it runs as smooth as ever! It's like driving a newer GT model. If you have bolt-ons or plan on adding mods, this is a must buy for the best performance.

    Cheyenne

    Year: 2000 Submodel: GT

    Helpful (1)

  • 5/5

    January 13, 2017

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

    Well worth the money

    Ive had my eye on this tuner for a little over a year now. I was skeptical about the price but i finally decided to bite the bullet and grab one. After seeing all the tuning options it made it clear it was well worth the money. You can actually set your own parameters and make your own tune while in the car with the tuner. I already did the J Mod shift kit in my automatic and now after the tune it shifts even harder! I love how aggressive it made my GT

    SavageGT

    Year: 1999 Submodel: GT

    Helpful (1)

  • 5/5

    November 23, 2016

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

    Must have Bolt-On Companion

    I have this Tuner with Three Tunes installed for all my current bolt-ons and it made a world of difference in my performance and really allowed me to gain the full potential of my bolt-ons. I recommend it for easy Bolt-on builds. I daily my GT and it just feels more alive and it is a very easy process to install the software, and use the Flash Tuner. The tune installation is smooth and quick. Just remember to read all the directions or call the customer support if you are unsure. They guided me in every single step.

    GTLove03

    Year: 2003 Submodel: GT

    Helpful (1)

  • 5/5

    November 08, 2016

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

    Get it now

    I was sceptical that a ECU flash could make any noticeable difference. I was wrong. My 03 GT has a cold air intake and Flowmaster exhaust, other that that stock as far as performance. The custom tunes provided by Bama really woke up the sleeping beast. I just wish I had a dyno to see what I really gained, but it is noticeable. This is probably one of the easiest upgrades you can do to pick up what Ford left on the table.

    03gt

    Year: 2003 Submodel: GT

    Helpful (1)

  • 4/5

    October 27, 2016

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

    Bama tuner

    This product works just as it is described. Very easy to use, so far I love it! Just a simple plug and play.

    SlammedStang

    Year: 2004 Submodel: GT

    Helpful (1)

  • 4/5

    October 25, 2016

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

    Worth the money

    Having a automatic this tuner was well worth it just for the shift firmness. Fells like a shift kit. I can also tell a power gian and have gotta a little better gas mileage. Free tunes for life tops it off as a complete package worth $400

    Tater

    Year: 2003 Submodel: GT

    Helpful (1)

  • 5/5

    October 24, 2016

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

    The Bama tune does what it says it do

    I am happy with the product and when I hooked it up to the Mustang I get the most power out of my mods and I would recommend it to all the Mustang girls and guys

    staley

    Year: 2003 Submodel: GT

    Helpful (1)

  • 5/5

    October 11, 2016

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

    A must have!

    Great product! A must have! Price is a little high but well worth the gain. If you are thinking about it, Get It!

    01BullittAZ

    Year: 2001 Submodel: Bullitt

    Helpful (1)

  • 5/5

    September 16, 2016

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

    Not good but great!

    Really woke up the car with the performance tune , wasn't expecting much since my car doesn't have much upgrades but it proved me wrong

    Pat805

    Year: 2001 Submodel: Bullitt

    Helpful (1)

  • 4/5

    August 22, 2016

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

    OUTSTANDING.

    THE BAMA TUNER WORKED EXCELLENT I HAVE A 2001 MUSTANG GT AUTO WITH 4.10 GEARS AND WIDER TIRES A COUPLE BOLT ONS. FORD COULD NOT ADJUST THE GEAR RATIO CHANGE SO TUNING IT WAS MY ONLY OPTION. IT REALLY WOKE UP MY CAR IT SHIFTS HARD AND REVS HIGHER ASWELL MY SECOND GEAR UNDER NORMAL ACCELERATION WILL REV UP TO 4K RPM. IT SOUNDS WONDERFUL THE ONLY REASON I WONT GIVE IT 5 STARS IS BECAUSE I HAD A BIT OF TROUBLE SETTING UP THE PIDS FOR THE DEVICE, THAT SHOULD BE SOMETHING THAT IS PRE-INSTALLED IN THE TUNER BEFORE RECIEVING IT. OTHER THAN THAT IT WORKED GREAT..

    sergiio92

    Year: 2001 Submodel: GT

    Helpful (1)

  • 5/5

    August 18, 2016

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

    Excellent

    This tuner did exactly what it was supposed to do, tune my car. I bought a 2001 GT and the previous owner had started beefing it up a little (4:10 gears, TB,Intake,etc) but I wasn't sure what all had been done but I know it didn't run great. Ordered this tuner. the AmericanMuscle and Bama techs walked me through on how to give them the best info possible. I received the tuner with 2 custom tunes (87per-93rac) and I loaded the 87 octane performance tune on my car quickly and without any problems. It worked perfectly! Now I had to drive all over as to run out my gas so I could fill the tank with 93 octane and load my racing tune. Only problem at all is my speedo is still off about 7mph but all that requires is contacting Bama and they will email a new tune with the correct speedo settings. I highly recommend this tuner

    Mustainer

    Year: 2001 Submodel: GT

    Helpful (1)

  • 5/5

    August 03, 2016

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

    04 Mustang GT auto

    This 04 mustang was bone stock. The two simple modifications of adding the Bama X4 tuner and changing the gearing to 4/10 made it a much more aggressive and fun to drive car.

    Jong

    Year: 2004 Submodel: GT

    Helpful (1)

  • 5/5

    May 19, 2016

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

    Bama X4/SF4 - Well worth the cost!

    Simply put, I think the 99-04 GT's are underrated to begin with, but after flashing my factory ECU with the 91 octane performance tune my little pony showed what a true race horse she was meant to be. A very noticeable gain in power, I can only imagine what the 91 race tune is capable of..! The only other mods I had already in use was a CAI and flowmaster 40's and short throw shifter. American Muscle.. thanks!!

    HookedonAmericanMuscleCarPerformance

    Year: 2002 Submodel: GT

    Helpful (1)

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