the thing is with the S/S box is it detects when boost is applied and fires up the inline secondary fuel pump to provide the fuel for the forced air. it also alters the input readings to the ecu so the ecu thinks its running stock. I don't think you need the Osiris cable, just need an uprev license from abbey. I think the Osiris cable is so you can upload youre own maps and for data logging but not 100% on this. it would be better to ditch the inline fuel pump and go for an uprated in tank fuel pump with a fuel return system and possibly bigger injectors and just get the OEM ecu mapped