Interesting.... So you could literally unplug one ecu and plug the other one in and everything works?I am now going ODB software the ecu is going to him. I am sending a new spare ecu and he will transfer the security information form my old ecu onto the new one. That way I will have the c`ms mapped ecu as a backup.
That only works if you have them mapped for the same injectors and/or MAP sensor. But those are easy to change too if needed.
To the spacers/isolators; these are standard on the Saab or US LSJ engine, but then also the fuel rail is raised with some spacer blocks. You don't need these and several SC-ed Speedsters have LSJ injectors directly fitted on a Z22SE (or Saab) head. 60lbs have the same length.