The 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.

Our Hondata S300 package Includes: Complete (new) Honadata v3 S300 unit, with software, & a p28 obd1 ECU (Hondata Unit Preinstalled). FREE Shipping. Please Note that this Package is now done upon order, please allow 3-8 Business Days for shipment.

Our Hondata S300 package Includes: Complete (new) Honadata v3 S300 unit, with software, & a p72 obd1 ECU (Hondata Unit Preinstalled). FREE Standard Shipping. Please Note that this Package is now done upon order, please allow 3-5 days for shipment.

This Hondata S300 package Includes: Complete (new) Honadata v3 S300 unit, with software, & a VTEC obd1 ECU (p06 converted to p28 VTEC spec with Hondata Unit Preinstalled). FREE Standard Shipping. Please Note that this Package is now done upon order, please allow 3-5 business days for shipment.

Hondata 92-95 Honda / Acura OBD1 S300 ECU covers are beautiful and precision machined lids that replace your old worn out ECU cover. Part # Lid-clear-S300

Hondata S300 Carbon Fiber ECU cover now available. Pure carbon fiber and precision machined lid that replaces your old worn out ECU cover. Fit most full sized OBD1 Honda ECUs.