Collection: Honda OBD1 Tuning | 1992–1995
Tuning and ECU hardware for Honda’s OBD1-era applications, centered around 1992–1995 vehicles and P-series ECU solutions. Browse Hondata S300, compatible ECU packages, tuning hardware and related support products.
Vehicle year alone does not guarantee ECU compatibility. Confirm the ECU code and engine configuration before ordering.
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Hondata Additional Input Subharness
Regular price $12.95 USDRegular priceSale price $12.95 USD -
OBD1 DIY Capacitor Replacement Kit (USDM/JDM)
Regular price $9.99 USDRegular priceSale price $9.99 USD -
IC17 Replacement
Regular price $11.99 USDRegular priceSale price $11.99 USD -
Hondata S300 V3 / P28 ECU Package
Regular price From $1,054.00 USDRegular priceSale price From $1,054.00 USD -
D1691 60V NPN Transistor for Q31 location on OBD1 ECU's
Regular price $2.99 USDRegular priceSale price $2.99 USD -
HA Motorsports Hondata S300 Ready OBD1 Non-VTEC ECU
Regular price From $449.00 USDRegular priceSale price From $449.00 USD -
HA Motorsports Hondata S300J Ready OBD1 JDM P08 ECU
Regular price $389.00 USDRegular priceSale price $389.00 USDSold out -
Sold out11FO ECU Board VTEC Conversion Kit
Regular price $19.95 USDRegular priceSale price $19.95 USDSold out -
Clear ECU Cover with etched Hondata Logo for OBD1 ECU's with S300
Regular price $25.00 USDRegular priceSale price $25.00 USDSold out -
HA Motorsports Hondata S300 Ready OBD1 AUTO ECU
Regular price From $469.00 USDRegular priceSale price From $469.00 USD -
HA Motorsports Hondata S300 Ready OBD1 P72 VTEC ECU
Regular price From $629.00 USDRegular priceSale price From $629.00 USDSold out -
HA Motorsports Hondata S300 Ready OBD1 P28 VTEC ECU
Regular price From $459.00 USDRegular priceSale price From $459.00 USD -
Sold out1980 ECU Board VTEC Conversion Kit
Regular price $19.95 USDRegular priceSale price $19.95 USDSold out -
Hondata S300J Socketing Kit for OBD1 JDM ECU's
Regular price $14.95 USDRegular priceSale price $14.95 USD -
Hondata S300 Socketing Kit for OBD1 USDM ECU's
Regular price $14.95 USDRegular priceSale price $14.95 USD -
Hondata S300 V3 / OBD1 AUTO ECU Package
Regular price From $1,064.00 USDRegular priceSale price From $1,064.00 USD -
1720 ECU Board VTEC Conversion Kit
Regular price $19.95 USDRegular priceSale price $19.95 USD -
Hondata OBD1 ECU Carbon Fiber Top Lid
Regular price $35.00 USDRegular priceSale price $35.00 USD -
Hondata S300 V3 / P28 ECU Boost Package
Regular price From $1,193.00 USDRegular priceSale price From $1,193.00 USD -
Sold outHondata S300 V3 / P72 ECU Package
Regular price From $1,224.00 USDRegular priceSale price From $1,224.00 USDSold out -
Hondata S300 V3 / P06 ECU Package
Regular price From $1,044.00 USDRegular priceSale price From $1,044.00 USD -
HA Motorsports Ethanol Sensor Plug-n-Play Harness for Hondata S300
Regular price $39.00 USDRegular priceSale price $39.00 USD -
Sold out28 Pin DIP / machined socket
Regular price $3.00 USDRegular priceSale price $3.00 USDSold out -
Hondata S300J Version 3
Regular price $595.00 USDRegular priceSale price $595.00 USD
Confirm Compatibility
Use the collection title, product application details, and vehicle or ECU options to narrow the correct wiring solution. If your chassis, engine, ECU, or swap combination is not clearly listed, contact VTI before ordering.
VTI-Built vs Partner Products
Products manufactured by VTI Motorsports are identified in their individual listings. Partner and vendor products remain available where they support a complete wiring or ECU installation.
Custom Configurations
For combinations outside the production catalog, submit a custom harness request with the chassis, engine, ECU, trigger system, injector type, and required sensors or auxiliary functions.







