[MuffinFlavored]

> Aftermarket ECUs absolutely exist for almost all internal combustion engines.

2025 BMW G80 M3 has an aftermarket ECU? Audi RS3? Mercedes E 63 S?

Immobilizer baked into the gateway and transmission and ignition, etc. etc.

[piltdownman]

No but you can ECU Unlock and re-flash e.g. the RS3 - which ends up fulfilling the same use-case in this instance as an aftermarket ECU.

[1970-01-01]

Yes. Bypass all this immobilizer nonsense with the aftermarket ECU.

https://www.ecumaster.com/products/interconnectors/

https://www.ecumaster.com/products/emu-black/