From the MOTEC webpage:
Injection
* 4 group sequential
* User programmable injector current 0.5~12 Amps peak
* Battery Comp to suit any injector
Ignition Outputs
* Up to 4 Ignition Outputs
* Versatile Ignition Interface allows connection to most OEM ignition systems including:
o Nissan Multi Coil modules
o GM EST DFI systems
o FORD EDIS DFI systems
o Mazda Rotary DFI modules
o Many Others
Which means you can run UPTO 4 individual injectors for sequential, any more than that you have to run grouped injection and last time i looked the rb has 6 injectors.
Same as the ignition outputs, you could run waste spark ie THREE coil packs, but not SIX coils as the RB's have. You need the motec ignition expander for that, which then only uses ONE ignition output from the M4.