WARNING! THIS PRODUCT IS FOR OFF-ROAD MOTORSPORT/COMPETITION RACING USE ONLY, NEVER TO BE USED ON ANY POLLUTION CONTROLLED MOTOR VEHICLE.  This is our complete KTuner Rev1 end user system with 05-06 RSX PRB ECU package. Will allow simple plug-and-play use. Requires no core, this is a complete out-right purchase of ECU and KTuner system ready to use. Fits: 2005-2006 RSX Type-S K20/K24 engine swaps using 05-06 RSX engine harness Includes: HA Motorsports KTuner Ready 05-06 RSX Type-S PRB ECU FREE clear ECU lid KTuner End User System. (fully installed and tested in ECU) USB cable for connecting the ECU to your laptop. KTuner software for operating/tuning the ECU. Please download the software here. What else do I need to use this ECU? Laptop computer running Windows XP or newer Internet connection when connecting to your ECU for the first time to register your system and setup a KTuner account (free). To see what is involved in setting up your KTuner account, see the KTuner getting started guide here. Bluetooth option: The KTuner Rev1 End-User board accepts the KTuner Bluetooth Add-On Module. What features will I have, and what can be adjusted/tuned using this ECU? Real-Time Data-Logging Real-Time Tuning Adjust for aftermarket injectors, injector sizing Ignition and Fuel tables tuning VTC Tuning VTEC tuning Knock tuning Adjustable rev-limiter Adjustable 2-step/ launch control Anti-lag Aftermarket MAP sensor support Expandable tables for boost PWM boost control for use with electronic boost control solenoid Boost cut VTEC window control closed loop control disable sensors and OBD2 monitors disable immobilizer Fuel cut parameters Fuel correction parameters Ignition correction parameters Idle control parameters Flex Fuel/E85 support 6 programmable outputs (nitrous control, etc)