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    • Flex Exclusive: Marelli 12GF in OBD
    March 18, 2026

    Newsletter

    Tuesday, 17 March 2026 / Published in Flex Updates, Updates SW

    Flex Exclusive: Marelli 12GF in OBD

    The Italian Legend

    New update of Flex, version 7.51.0.0, adding support for Marelli 12GF in OBD.

    Exclusive solution now available to program last generation FCA vehicles like Fiat 500 and Fiat Pandina equipped with 1.0L FireFly mild-hybrid (petrol) engine (MHEV 70PS).

    This protocol allows you to read and write the map area, performing specific optimization to improve throttle response and general vehicle efficiency.

    Operational note: in order to correctly program in OBD, you must use the SGW Bypass (MMS03.001) cable, necessary to communicate with the control module.

    Once the ECM writing operation is done, unit alignment must be performed using a diagnostic tool or following the guided procedure available on Flex.

    Some of the supported vehicles:

    • Fiat 500 (332) 1.0L FireFly MHEV 70PS – 2024
    • Fiat Pandina (319) 1.0L FireFly MHEV 70PS – 2024

    This new protocol is available for the following software packages:

    OBD

    • FLS0.1M – SW Flex ECU (car, van, bike) OBD/Bench Master
    • FLS0.1S – SW Flex ECU (car, van, bike) OBD/Bench Slave
    • FLS0.5M – SW Flex Full Master
    • FLS0.5S – SW Flex Full Slave

    Newly added protocols:  

    (OBD)

    • FCA Marelli 12GF TC377 Read/Write/Checksum Calculation Maps

    Reading Time : ~ 12 minutes  Writing Time : ~ 5 minutes

    Software improvements:

    • Added new Virtual Reads for Continental SID321, EMS314x and EMS316x

    Click here to discover the full list of supported vehicles.

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