Nah, only the RB25 & SR20 ECU's need a extra daughter board to be chipped, do a Google for "BadBiki" if you want more info. RB20 ECU's and R32 RB26's (not sure about later models) can just have the EEPROM chip removed and re-written. And that sits under a factory "daughter-board".
No worries, mate, I haven't opened it up yet or tested it out, but I'm sure it's sweet. Cheers.
And next time I'll get you on the Go-Kart track, or mess up and go drifting again like i did yesterday, either way!