Are 3B ECUs interchangeable?

[James Mcmahon]

Does anyone know if the 3B ECUs from the URQ RR, 200 20v turbo and the S2 are interchangeable?

[tango123]

Depends on the ecu part no. as some have a immobiliser.

[James Mcmahon]

Thanks

[tango123]

give me a shout if u need a ecu. i have a spare one i could sell.

[newsh]

I have a 3B ECU with MRC chipset for a GT3071

[spink]

3b/RR never came with immobilsers

[newsh]

Thanks, the ECU I have fitted to my car is from a URQ RR with the part number 0 261 200 453
I believe there is an ECU fault but as I have the incorrect ECU fitted I obviously don’t want to send my ECU off and spend out if it won’t and never will work in my car.

The part no. of the 3B ECU I have here is 261 200 484

[James Mcmahon]

Thanks for the help guys. The car is now running. Swapped the ECU and the engine speed sensor and it fired right up.

[SteveH]

Thanks for the help guys. The car is now running. Swapped the ECU and the engine speed sensor and it fired right up.