Siemens
SIMOS 18.4
ECU (engine)
Planned
RSA signed
Specification
- Manufacturer
- Siemens
- Family
- SIMOS 18.4
- Microcontroller (MCU)
- TC1791
- Flash size
- 4 096 kB
- Read protocols
- BENCH, BOOT
- Signature
- RSA signed
- Era
- 2015-2019
Checksum: Planned
Checksum correction for this family is on our roadmap but not available yet — the tuner handles it manually.
Applications
- Audi RS3 8V 2.5 TFSI (2015-2016, 367 hp)
- Audi TT RS 8S 2.5 TFSI
Notes
VAG 2.5 TFSI EA855 SIMOS 18.4 (EVO uses MG1CS040). Application mapping unconfirmed — verify against the ECU part number before relying on it.