Delphi MT21M — supported tools

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Delphi MT21M engine ECU with confirmed AutoTuner support via Bench, OBD. MCU variants: TC265. Reading and writing follow the protocol scope; match the ECU identification to a supported variant before use.

Last changed: 2026-10-31 · Card revision 2

Compatibility depends on ECU HW/SW, protocol and active licence. A tool missing from this list does not imply lack of support.

Tool

Connection

Operations

Scope and notes

AutoTuner

Bench

Read (type unspecified)
Write

MT21M; MCU variant TC265

Reading and writing. Scope covers AutoTuner-supported applications for the specified variant.

AutoTuner

OBD

Read (type unspecified)
Write

MT21M; MCU variant TC265

Reading and writing. Scope covers AutoTuner-supported applications for the specified variant.

Flex

OBD

Operations unspecified

MT21M EU5 CAN; Harley Davidson Adventure Touring Pan America 1250 ST (I) 1252cc (E5) Revolution Max RA1250 (2020–2025); Harley Davidson CVO 117 Road Glide (III) 1923cc (E5) Milwaukee-Eight 117 FLHXSE (2021–2022); Harley Davidson CVO 117 Street Glide (II) 1923cc (E5) Milwaukee-Eight 117 FLHXSE (2021–2022); Harley Davidson Softail 107 Heritage Classic (I) 1746cc (E5) Milwaukee Eight 107 FLHC (2020–2021); Harley Davidson Softail 107 Slim (II) 1746cc (E5) Milwaukee Eight 114 FLSL (2021–); Harley Davidson Softail 114 Breakout (IV) 1868cc (E5) Milwaukee-Eight 114 FXBRS (2021–2022); Harley Davidson Softail-Cruiser 114 Fat Bob (I) 1868cc (E5) Milwaukee Eight 114 FXFBS (2021–2025); Harley Davidson Softail-Cruiser 114 Fat Boy (I) 1868cc (E5) Milwaukee Eight 114 FLFBS (2021–2024); Harley Davidson Softail-Cruiser 114 Street Bob (I) 1868cc (E5) Milwaukee Eight 114 FXBBS (2021–2024); Harley Davidson Softail-Cruiser Sport Glide (I) 1746cc (E5) Milwaukee Eight 107 FLSB (2021–2025); Harley Davidson Softail-Cruiser Standard (I) 1746cc (E5) Milwaukee Eight 107 FXST (2021–2025); Harley Davidson Sport Nightster Special (I) 975cc (E5) Revolution Max RH975S (2022–); Harley Davidson Sport Sportster S (I) 1252cc (E5) Revolution Max RH1250S (2025–); Harley Davidson Touring Electra Glide Revival (I) 1868cc (E5) Milwaukee-Eight 114 FLHT (2021–2022); Harley Davidson Touring Road Glide Special (IV) 1868cc (E5) Milwaukee-Eight 114 FLTRXS (2021–2023); Harley Davidson Touring Road King Special (III) 1868cc (E5) Milwaukee Eight 114 FLHRXS (2021–2025); Harley Davidson Touring Street Glide Special (III) 1868cc (E5) Milwaukee Eight 114 FLHXS (2021–2023); protocol 23700000; OBD

Confirmed compatibility for the specified protocol and applications. Requires one of these packages: FLS0.13M, FLS0.13S, FLS0.1M, FLS0.1S, FLS0.5M, FLS0.5S. Check this Flex protocol for detailed reading, writing and memory functions.

Flex

Bench

Operations unspecified

Pinout Bench

No Bench pinout has been added.

Pinout Boot

No Boot pinout has been added.

Update history

Revision 2 · 2026-10-31
Revision 1 · 2026-10-31