4J Tuning

DIY Resources

WinOLS Projects, XDF files, VBF resources, DTC tools, and calibration support files.

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EZ LYNK Support

Tune packages, revisions, and setup help for Auto Agent customers.

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Custom Tunes

Vehicle-specific diesel tuning for supported platforms.

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Conversions

XDF | KP | OLS Conversions

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Free Online Tuning Tools

Browser-based utilities from 4J Tuning designed to simplify common calibration and file conversion workflows.

Free Web Tool

XDF → EZ LYNK Converter

Convert TunerPro XDF definition files into an EZ LYNK-compatible Custom Configuration CSV directly in your browser. Upload your XDF, review the conversion, and download the finished CSV ready for import into EZ LYNK.

Open Converter →

No installation required.

Free Web Tool

VBF → BIN Converter

Convert Ford VBF files into binary format directly in your browser. Upload a VBF file, process the conversion, and download the resulting BIN for use in your calibration workflow.

Open Converter →

No installation required.

Tunes & XDF Files

tune@4jtuning.com

Send tune files, original reads, XDF-related files, order information, and tuning requests to this address.

Support & Questions

support@4jtuning.com

Use this address for product support, order questions, software assistance, licensing questions, and general inquiries.

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