FCA PROXI Tool is a next-generation configuration editor designed for specialists who demand precision, stability and full control over FCA vehicle configuration. It delivers a clean, consistent configuration file ready to be written back to the vehicle. New: use Direct Connect to read/write supported configuration buffers directly via ELM327-compatible adapters or J2534 PassThru — without launching a separate diagnostic application.
Built for professional workshops, retrofitters and diagnostic experts who need predictable, repeatable results — not guesswork.
FCA PROXI Tool focuses on one thing and does it properly: professional-grade handling of FCA PROXI configuration. No unnecessary features, no cloud dependencies, no “universal magic” — just predictable results and clean files.
The tool supports FCA platforms that rely on PROXI configuration, including WL, KL and others. Florence architecture (Maserati M139, M145, Alfa Romeo 8C) is not supported, keeping the focus on platforms where the workflow is fully validated.
FCA PROXI Tool generates a fully consistent configuration file that can be written directly with your diagnostic equipment. No separate PROXI alignment step is required once the file is prepared.
FCA PROXI Tool can now communicate with the vehicle for supported read/write operations from inside the app. Use an ELM327-compatible adapter for basic workflows, or J2534 PassThru for professional interfaces. No separate diagnostic software is required for these operations (your interface driver may still be needed).
Standard Mode provides fast, human-friendly parameter editing. Advanced Mode gives granular control for experienced specialists. Compare Mode makes it easy to analyze differences between configurations during retrofits, diagnostics and validation.
Licensing requires an internet connection for server access and online authorization. The license remains hardware-bound to your PC to protect your access and prevent sharing. Without an active connection, protected features and validation steps may be unavailable or blocked.
CRC and critical checksum calculations are performed via a protected server (cloud) to ensure consistent, repeatable results across different PCs/adapters. Advanced tools include controlled bit-level editing for specialists who need exact changes.
Load a .proxi map file as a parameter map (read-only). The editor applies changes to the PROXI/CDA buffer currently loaded in the tool. Perfect for fast, structured editing across hundreds of parameters.
The interface is streamlined for daily workshop use: clear structure, fast interaction and no distractions. Common tasks stay simple, while advanced work remains fully accessible when needed.
FCA PROXI Tool is not a replacement for your diagnostic suite. It is a focused configuration editor that integrates into your existing process and gives you full control over the PROXI file itself.
Use your preferred diagnostic software to read the PROXI configuration from the vehicle and export it as a file.
Open the file in FCA PROXI Tool. Adjust logical parameters in Standard Mode, or perform more detailed work in Advanced or Compare Mode depending on the task.
The tool produces a clean, internally consistent configuration file that reflects your changes and is ready to be written back.
Use your usual diagnostic environment to write the prepared file to the vehicle. No additional PROXI alignment procedure is required for the file produced by FCA PROXI Tool.
FCA PROXI Tool is built for real workshop workflows: load PROXI/CDA data, change configuration parameters, and keep the file consistent with CRC recalculation. It’s commonly used for EU conversion and configuration work on Jeep / Chrysler / Dodge / Fiat / Maserati.
Quickly modify available options in a clear interface, including advanced bit-level tools for specialists. You stay in control of what changes and why.
Popular conversions include lighting options, market settings and feature toggles that depend on platform. The tool helps you apply changes consistently and keep saved data clean.
Fast loading, predictable saves, and clear versioning. Updates are published on the official site and can be downloaded directly.
Short answers to the questions people actually ask before buying.
Build: Latest build (auto-updated)
Get the latest build and bring professional-grade configuration control into your workshop. For licensing and pricing information, please contact the author directly.
FCA PROXI Tool is intended for professional use only. Make sure you understand the PROXI structure and your diagnostic equipment before applying configuration changes to a vehicle.
Latest updates and improvements.