An Obdii Piggyback Connector acts as a bridge between a vehicle’s OBDII port and a data logging device, such as HPTuners MPVI. This allows custom Parameter IDs (PIDs), like wideband data, to be displayed as if they were part of the vehicle’s original data stream. This connector simplifies the process of integrating aftermarket widebands, like the AEM X-Series, into your data logging setup.
Streamlining Wideband Integration with an OBDII Piggyback
The piggyback connector simplifies wiring by providing four spring terminals for direct connection to the AEM X-Series wideband: ground, +12v power, CANH, and CANL. Power is supplied directly by the unit, eliminating the need for separate wiring harnesses and making the setup portable. This connector functions similarly to the AEM 30-0334 OBDII interface, converting AEMNet CANBus signals to the OBDII protocol.
Expanding Compatibility Beyond CAN Vehicles
A key advantage of the OBDII piggyback connector is its compatibility with both CAN and J1850 protocols. While the 30-0334 interface only supports CAN (typically found in vehicles after 2006), the piggyback connector works with older GM, Ford, and Chrysler vehicles manufactured from 1996 onwards. This allows users to utilize standard AEM widebands (30-0300 or 30-0310) on a broader range of vehicles. Essentially, this device expands the functionality of these widebands, making them compatible with virtually any OBDII-equipped vehicle.
Enhanced Features for Improved Performance and Data Accuracy
Beyond basic protocol conversion, the OBDII piggyback connector offers several additional benefits:
- Multiple Wideband Support: The device can handle multiple 30-0300 or 30-0310 wideband channels simultaneously.
- Integrated Power Supply: Power for the wideband(s) is drawn directly from the OBDII port, further simplifying installation.
- Wideband Heater Control: The connector can control wideband heaters, contributing to extended sensor lifespan.
- Exhaust Back-Pressure Support: Provisions are included for an exhaust gas back-pressure sensor and compensation circuit for more accurate readings. This feature allows for more precise tuning and data analysis.
Future Developments and Potential Applications
Future development plans for the OBDII piggyback connector include support for additional devices. One possibility is the reintroduction of an AEM DynoShaft-type design, enabling measured horsepower and torque to be displayed as custom PIDs. This would provide tuners with real-time performance data directly within their logging software.
This compact device significantly enhances data logging capabilities by seamlessly integrating wideband data into the OBDII stream. Its broad compatibility, simplified installation, and advanced features make it a valuable tool for automotive enthusiasts and professionals alike.
