SYNC signal on Opel 1.6 16v

[guiyote07]

I am instaling a M4 in a Opel Corsa 1.6 Lts 16v N2 Rally car (C16XE engine).
I find that the SYNC wheel (on the exhaust cam) has 4 tooth, with different wide and different angle!!
Like it is a N2, I cant modify "legaly" the wheel ( cutting 3 tooth i.e.).
Someone has deal with it before? All help will be gratefull.
Thanks in advance.

[RossB]

You should be able to use the BMW mode 171 - 173 on this engine.

[guiyote07]

Thanks for help!
I will try this mode and will advise for the results.
Thanks again.