K-Pro Programmable ECU by Hondata
The K-Series Programmable ECU (K-Pro) consists of a hardware modification to your factory K-Series ECU, plus Windows based software which allows you to re-program the ECU and datalog sensors. Requires you to send your factory ECU to Hondata for modification.
02-04 RSX Type S System with K-Pro here
02-05 Civic Si System with K-Pro here