he s300 version 3 is a plug in module to the OBD1 factory Honda Engine Computer (not included) which vastly expands the capabilities of the factory ECU. Forced induction, datalogging, real time programming, Bluetooth and engine protection are but a few of the comprehensive s300 features.
Designed, manufactured and assembled in the USA.
Note that there is a rectangular frame ECU version of the s300 and a square frame ECU version (s300J). Available now.