I am in the process of installing a piggyback on the side, to use only when spraying nitrous.
I will put few degrees back on timing for safety reasons when on nitrous.
the piggyback is communicating with the cranckposition sensor. Does any body know, how many teeth
the cranck position is reading? it it 60 teeth and 2 flats or is it 30 teeth 1 flat, and 30 teeth and one flat? without inputing the right value in the piggyback tune, it is making the car having cranking problems once in a while.
thank you.

 

Did you ever get it working correctly?
I want to do the same and would like any info you can provide.
including which one you bought and install suggestions
Thanks
Barry