Hondata modifies standard OBD I Honda ECUs, adding features and expanding the capabilities of the ECU (to read boost for example).  For best results naturally aspirated ECUs should be tuned to each individual engine setup and forced induction ECUs need to be tuned by an experienced tuner.

Hondata S300 V3 Package w p28 ECU

Our Hondata S300 package Includes: Complete (new) Honadata v3 S300 unit, with software, & a p28 obd1 ECU (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 v3 s300 System

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.

Hondata FlashPro

The Hondata FlashPro is a hardware and software combination that connects from your laptop's USB port to your Honda's diagnostic port.

Hondata KPRO

Hondata K-Pro 4
• Fits inside the ECU
• Made in USA
• KManager Windows based software for parameter & table editing, calibration uploading and data logging.
• Many built in calibrations for common engine combination's
• Most current Version 4 board and software
*Compatible Core ECU Required


Hondata 4 bar Map sensors

The Hondata 4 bar map sensor is a plug compatible replacement for the Honda factory MAP sensor. It is a direct replacement for the B, D, H, F and K-series Honda engines. This plug in sensor takes less than 60 seconds to install and eliminates the risk of sensor damage that often occurs when attempting to wire in other types of MAP sensors. Settings are found in your Hondata s300/ KPRO unit Parameters under MAP.

Hondata Normally Closed Boost Controller

For use with the s300 and K-Pro, the Hondata normally closed boost control solenoid is designed for use in high boost applications, but also works well in low boost applications. It is normally closed so that if there is a failure you will run off the wastegate spring instead of over boosting.  It uses 1/8th NPT fittings which allow you to use NPT to AN fittings if you wish.

Hondata Traction Control (For S300, KPro, or Flashpro)

Hondata Traction Control Kit for use with Hondata S300, Kpro, or Flashpro. The traction control kit works by monitoring the antilock brake system (ABS) wheel sensors, and reduces engine output when wheel spin is detected to achieve maximum traction. The included dash mountable switch allows you to select different slip rates on the fly, while the software allows you to fine tune the system to work best with your car and driving style.

Hondata Coil Pack Retrofit (CPR)

This Hondata CPR kit is for the use of RSX ignition coils with a Hondata s300 ecu on a B series VTEC engine.

Hondata Clear OBD1 ECU Cover

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 Clear KPRO ECU Cover

Hondata 2002-2006 RSX-S PRB/PRC* ECU covers are beautiful and precision machined lids that replace your old worn out ECU cover. Part # Lid-clear-KPRO

*To purchase Hondata ECU upgrade Install*.Choose your upgrade. Click "buy-it  now" button, proceed & with check out. ECU upgrade purchase

includes the return shipping of your Chipped ECU. However you must "SHIP US YOUR CORE ECU" so that we may preform your

upgrade. Once we receive your stock ECU we install, program it & ship it back to you. We are not responsible for lost or damaged

goods during this process. All cores must be the same as selection. Specifications given are approximate and may vary from ECU

to ECU. Call for more info (626) 261-4052. If you don't have a core check out our used parts site  we may have it

 Shipping Address: Swap Shop Racing * 650 n Barranca ave #a * Covina Ca. 91723