ECU / Immobiliser

[Paul Hassell]

We are fitting another T5 engine in another Autograss special but we are having trouble getting a spark, does anybody know if the immobiliser is within the ECU and if so if there is an easy way to bypass it ?

The ECU part number is Bosch 0 261 203 851.

Any help will be much appreciated.

[p fandango]

what year car was the engine out of? later 850's had a transponder ring in the steering cowling & immobiliser

[Paul Hassell]

It was a P plate.

[turbo-tuner]

Yes, 851 ECU does have immobiliser, although it can be disabled.

[Paul Hassell]

Yes, 851 ECU does have immobiliser, although it can be disabled.

Thanks for that info, what is involved in disabling it ?

[turbo-tuner]

The software in the ECU needs to be altered to make it ignore the immobiliser.

[Paul Hassell]

The software in the ECU needs to be altered to make it ignore the immobiliser.

Cheers, you have a PM.

[glock19]

Or you can get a 074 ECU from the breakers ... :-D