I don't know if you guys have surfed over to the RDSport UK Site but there's a month old PR about an ECU Software upgrade that you can do yourself.
Looks like a CD, a parallel to ODB2 port adaptor and a booklet.
This set-up reminds me a lot of the Haltech and Link kits. (Although they not only supply the software and adaptors, they also throw in a programmable ECU.)
What's the word on DIY engine management?