SCT X4 Programmer with Schropp Custom Tune for Mustang 1996–2004

The SCT X4 Programmer with an individual Schropp Custom Tune allows the ECU of the 1996–2004 Ford Mustang to be calibrated through the vehicle's OBD-II port. In addition to programming the vehicle, the X4 provides useful diagnostic and data-logging functions that remain available after the Custom Tune has been installed.

The Schropp Custom Tune is created to suit the individual vehicle configuration. On vehicles with an automatic transmission, transmission behaviour can also be incorporated into the calibration where supported by the vehicle's ECU strategy.

Schropp Custom Tune

Our Custom Tunes are intended for vehicles in standard configuration and vehicles with typical basic modifications such as an upgraded air filter. The calibration is designed to provide improved throttle response and optimised power delivery as well as suitable transmission calibration on supported automatic applications.

For extensively modified engines or configurations that differ significantly from standard specification, please contact us before ordering so that we can confirm whether the required calibration can be covered by this product.

Return to stock – original calibration is stored

During the initial programming process, the SCT X4 reads the vehicle's original calibration and stores the stock file on the device. This allows the vehicle to be returned to its original software calibration when required.

Diagnostics and live vehicle data

The SCT X4 can also be used as a useful diagnostic tool independently of the actual programming process:

• Read and clear diagnostic trouble codes (DTCs), for example when the check-engine light is illuminated
• Display supported engine and ECU parameters live on the colour display
• Data-log supported vehicle parameters for later analysis
• Data logging in combination with a Windows laptop

No SCT preloaded tunes

The SCT preloaded tunes are disabled by us. These generic SCT calibrations are not intended for the European market or the respective European vehicle configuration and are therefore not approved by us for use.

This also prevents a generic SCT tune from accidentally being programmed to the vehicle instead of the individually created Schropp Custom Tune.

Custom Tune and vehicle information

To create the individual calibration, we require the vehicle's VIN and ECU Strategy together with information about the vehicle configuration.

The VIN and ECU Strategy can be read through the SCT X4's “Vehicle Info” menu. We also require the following information:

• Any engine-related modifications
• Required fuel grade: 95 or 98 octane
• Rear tyre size
• Modified final drive ratio, if applicable

If the required vehicle information is available before shipping, we can store the Custom Tune directly on the X4. If the calibration needs to be created afterwards using the ECU Strategy read from the vehicle, the Custom Tune will be supplied by email.

Transferring an emailed Custom Tune to the X4

The free SCT Device Updater is required to transfer a Custom Tune supplied by email to the SCT X4. The software is Windows-only, so a Windows laptop or PC is required.

We include German-language instructions explaining how to transfer the Schropp Custom Tune to the SCT X4.

Vehicle applications

• 1996–2004 Ford Mustang 3.8 V6
• 1996–2004 Ford Mustang GT 4.6 V8
• 1996–2001 Ford Mustang Cobra 4.6 V8
• 2003–2004 Ford Mustang Mach 1 4.6 V8

Schropp Custom Tunes are available for 95 or 98 octane, depending on the vehicle application.

Product features

• Individual Schropp Custom Tune
• Programming through the OBD-II port
• Original stock calibration stored on the device
• Vehicle can be returned to the original software calibration
• Read and clear diagnostic trouble codes
• Display supported live vehicle data on the X4
• Data logging with a Windows laptop
• SCT preloaded tunes disabled by us