The K-Series Programmable ECU (K-Pro) consists of a hardware modification to any K-Series ECU, plus Windows software which allows you to re-program the ECU and datalog sensors. On-board datalogging is standard on all K-Pros from serial number 4111 (version 2)and above.u00a0 For more information go here. Additional analog inputs and double the datalogging memory now available with the K-Pro V3. K-ProV3 u00a0supersedes all previous versions.