Ford Performance 3.73 Gears and BAMA X4/SF4 Power Flash Tuner (99-04 V8 Mustang)Find parts that fit my vehicle

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!

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)

• Ford Racing 3.73 Gears: Great for street, road, or race use; this 3.73 8.8" Ford Racing ring and pinion gear set is stronger than the stock OEM unit!
• Motive Gears 8.8" Rear End Installation and Bearing Kit: The perfect installation kit for rebuilding or modding yor Mustangs 8.8" rear end.
• 2 quarts of Royal Purple 75w90 Synthetic Gear Oil: Max-Gear® is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power output throughout the drive train
• 1 quart of Ford Racing Friction Modifier: Ford Racing's Friction Modifier is a specially formulated additive to provide smooth operation of clutch-type limited-slip differentials, perfect for gear swaps.
• SCT SF4/X4 Power Flash Tuner: Proven SCT Technology + Custom Bama Tunes = all the difference in the world.

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
• 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