ECU's Immobilisers & Chipsets

[Colesy]

I thought I had an easy task on my hands, swap the Homefries chips into the already RS2 spec ECU p/n 4A0907551B.

But having done this the car starts and stalls after a second or so. So, I'd assume the immobiliser is kicking in. So would this indicate that the Homefries are non immobiliser chips? I have refitted the chips that came with the ECU and the car starts fine, so have ruled out an ECU fault.

I have done some other testing with two other completely standard ECU's I have and:
895907551B - Starts then stalls after a second or so.
4A0907551C - Starts and runs, no issues.

Is there a way to get these chips working with the RS2 spec ECU? Any work arounds or other pointers would be appreciated. Via PM if the immobiliser information is best kept off a public forum.

[SteveH]

The Homefries were for non immo ECU's. I don't think Paul did them for immo ECU's.

[johne]

I have Homefires from Paul in an immo ECU.

Happy to share what I know about the immobiliser function by PM or phone if you call me.

[newsh]

If the software is non-immo it should work in any ECU.
Is it an RS2 homefry chipset you’re trying to fit?

[Colesy]

If the software is non-immo it should work in any ECU.
Is it an RS2 homefry chipset you’re trying to fit?

Yes, I confirmed with Paul some time ago that they are his RS2 spec chips for 440cc injectors.