Fiat 500 1.3 JTD — Marelli MJ9DF 4F42B222 — Calibration File

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Fiat 500 1.3 JTD — Marelli MJ9DF 4F42B222 — Calibration File

  • Thread starter Thread starter Bin
  • Start date Start date
  • Tagged users Tagged users None
Fiat 500 1.3 JTD — Marelli MJ9DF 4F42B222 — Calibration File
Unlock the full potential of your Fiat 500 1.3 JTD with this professionally calibrated Stage 1 tuning file for the Marelli MJ9DF ECU. Specifically developed for software version 4F42B222, this file is the definitive solution for enhancing your vehicle's performance and driving dynamics. Our calibration focuses on optimizing key engine parameters, including fuel injection maps, turbocharger boost pressure, and torque limiters, delivering a significant and noticeable increase in horsepower and torque across the entire rev range.

You will experience sharper throttle response, smoother acceleration, and more flexible power delivery. Every modification has been carefully tested to ensure stability while retaining all factory safety features and diagnostic systems. This file is engineered for vehicles with stock engine components and the 6-speed manual gearbox, making it the perfect upgrade for drivers seeking a reliable way to make their Fiat 500 more responsive and enjoyable to drive without compromising engine longevity.

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Bin

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A new product by Bin is available: Fiat 500 1.3 JTD — Marelli MJ9DF 4F42B222 — Calibration File 55283475 - Stage 1 — ECU-Nr Prod: 55283475 / ECU-Nr ECU: HW000 — Professional calibration file for enhanced performance.


Fiat 500 1.3 JTD — Marelli MJ9DF 4F42B222 — Calibration File 55283475

Description​

ParameterValue
Producer:Fiat
Series:500
Model:1.3 JTD
Model Year:2015
Type (Engine):Turbo-Diesel
Displacement:1.3 L
Output:95 PS / 69.9 kW
Gearbox:6-Speed Manual
ECU Maker:Marelli
ECU Build:MJ9DF
ECU-Nr Prod:55283475
ECU-Nr ECU:HW000
Software:4F42B222
Checksum:N/A
Eprom 8-Bit sum:4B9F
Nested Versions:1 modified version included (Stage 1) + Original for reference
Project Type:Complete binary file
Details:st1
Project Size:4 194 304 bytes

All tuning files were acquired through official EVC.de resellers and verified on a professional dynamometer. Each calibration corresponds to the developer listed in the “Modified By” section — performance graphs may be available on their official website. These files are intended for motorsport or off-road use only. Ensure proper installation and do not operate the vehicle aggressively without first confirming mechanical condition. The seller accepts no responsibility for misuse or non-compliant road use.

Extended Product Information​

  • Driver-wish and torque-limiter maps rescaled for sharper, more linear throttle response
  • Turbo duty & boost ceilings lifted while factory exhaust-temperature safeguards stay active
  • Rail-pressure ramps refined for steadier combustion during rapid load changes
  • Mid-band injection timing optimised; cold-start and idle strategies remain OEM-smooth
  • EGR flow reduced with diagnostics balanced to avoid DTCs and keep intake cleaner
  • All catalyst/DPF, sensor-plausibility and limp-home protections fully retained


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Bin
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