2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 15 Minutes
Difficulty Level:
Simple installation for anyone.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Mustang Sales Tech
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Find Custom Tuners for your Mustang
Unleashed Tuning Rev-X Tuner by SCT with 3 Custom Tunes (99-04 Mustang GT)Find parts that fit my vehicle
Item 400004
$586.10
40 Reviews
1 Answers
On Sale
-25% $586.10 Was $778.99
Ship to: 43215
Please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Will this fit your Vehicle?
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Improves Horsepower, Torque and Performance
- Guaranteed Maximum, Safe and Reliable Power
- Includes 3 Custom Files from Unleashed Tuning
- Includes Post Sale Calibration Support from Unleashed Tuning
- Download Tunes & Get Device Updates via Wi-Fi, No Computer Required
- OBD-II Data Logging and Monitoring
- Diagnostics Tool - Reads and Clears DTC Trouble Codes
- Holds Up to 10 Custom Tunes
- Note We Will NOT Tune Your Vehicle if You Have Any Emissions Equipment Removed
- Currently Do NOT Allow Orders from California
- For use with 1999-2004 GT Mustang Models
Description
- Buy this Tuner & Submit your Mustang's Info Here
- A Unleashed Tuning Calibrator will write custom tune files specifically for your Mustang
- Load 'em on your Mustang and GO!
More Power, Better Performance. Improve the performance of your 1999-2004 GT Mustang with a Rev-X Tuner that includes 3 Unleashed Custom Tune Files. From the factory, Ford programs their Mustangs to cater towards the needs of the daily driver, not the performance enthusiast who adds aftermarket bolt-on modifications in the search of more power. That is why a custom tune file is so important.
Three Unleashed Custom Tunes. When you order this Rev X Tuner by SCT, you'll also be receiving 3 custom tune files from Unleashed Tuning written specifically for your personal Mustang and your particular modifications with your choice of octane level. By optimizing cam timing curves, spark curves, and air/fuel tables, an Unleashed Custom Tune will squeeze out the extra power Ford left on the table. Unleashed Tuning even provides post sale calibration support to assure your Mustang is running healthy and strong.
WiFi Updates and Cloud Tuning. The Rev-X Tuner by SCT is Wi-Fi capable meaning it will always be up to date. Once setup with your Wi-Fi password, the Rev-X will download the latest firmware updates via the internet. Besides firmware updates, your Rev-X can also download your custom tune files via the cloud, reducing the hassles of transferring files from your PC to your Rev-X device.
Data Logging and Monitoring. The Rev X Tuner by SCT 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. You can even customize the monitoring capability of your Rev X using device's free Livelink software.
Diagnostics Tool. The Rev X 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.
Application. This Unleashed Tuning Rev-X Tuner by SCT with 3 Custom Tunes is specifically designed for the 1999-2004 GT Mustangs equipped with the 4.6L V8 engine. Please note, we will NOT tune your vehicle if you have any emissions equipment removed.
- Replacement Hardware – SKU U3021H
- Replacement Hardware – SKU U3022H
**Please Note: The custom tune files will be emailed directly to the end user within 3-4 business days from Unleashed Tuning. Submit your Mustang's Info Here
Unleashed Custom Tunes are not legal for use in California or on pollution controlled vehicles, this product will not ship to addresses in California due to state regulations. Additionally, support will not be provided for tuning for California residents.
Fitment:
- 1999 Ford Mustang
- 2000 Ford Mustang
- 2001 Ford Mustang
- 2002 Ford Mustang
- 2003 Ford Mustang
- 2004 Ford Mustang
Unleashed Tuning 400004
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Rev-X Device
- (1) HDMI/OBDII Interface Cable
- (1) Micro USB Cable
- (3) Unleashed Tuning Custom Tune Files - via email
4.7
Customer Reviews (40)
Questions & Answers (1)
Will It Fit My Mustang
- Bullitt - 01
- GT - 99, 00, 01, 02, 03, 04
