The Obd-0 system found in early 90s Honda vehicles utilizes a unique injector setup compared to its successor, OBD-1. This article details the process of modifying OBD-1 injectors for compatibility with an OBD-0 engine harness, focusing on the physical alterations required for a successful installation.
The key difference between OBD-0 and OBD-1 injectors lies in the connector design. OBD-0 injectors feature a distinctive center line dividing the connector plug.
This contrasts with the OBD-1 connector, which has two small tabs at the top.
To achieve compatibility, these tabs on the OBD-1 injector must be carefully removed. A Dremel tool with a thin grinding attachment is recommended for this task. Precision is key to avoid damaging the connector housing.
Once modified, the OBD-1 injector should fit seamlessly into the OBD-0 harness.
Beyond connector modification, addressing potential issues with the existing OBD-0 injectors is crucial. Inspecting for stuck injector hats and cleaning carbon buildup from o-rings can significantly improve performance.
The OBD-0 system utilizes a resistor box in the injector harness. While adapting OBD-1 injectors eliminates the need for this box, carefully consider preserving the wiring for future reversibility.
Soldering the wires and applying heat shrink tubing ensures a clean and reliable connection.
This modification allows for the use of readily available OBD-1 injectors in an OBD-0 vehicle, potentially improving performance and reliability. By addressing both connector compatibility and injector health, this process offers a comprehensive solution for upgrading the fuel delivery system in older Honda models.
