I have a Hondata Ltd Edition S300 so it plugs straight into an Obd2a setup/ plugs, the unit is manufactured by Hondata as opposed to someone chipping an ecu. Mapped for EK9 by Will at RDT. I posted a thread on here about the mapping.
If interested or want more info let me know, as I keep it in a secure unit thats not open Sunday so can't send any pics today.
Moray