For automotive enthusiasts and professional technicians alike, understanding vehicle performance data is crucial. Modern vehicles are complex systems, and accessing the wealth of information they generate can be the key to optimizing performance, diagnosing issues, and gaining a deeper understanding of your car’s behavior. Enter the AQ-1 OBDII Data Logger from AEM Performance Electronics, a powerful and user-friendly tool designed to tap into your vehicle’s data stream and provide invaluable insights. This advanced data logger offers an accessible entry point into professional-level data acquisition, making it ideal for everyone from track day participants to seasoned mechanics.
The AEM AQ-1 OBDII Data Logger (PN 30-2501) paired with the AQ-1 OBDII wiring harness (PN 30-2907-96) presents a cost-effective solution for comprehensive vehicle data logging. Priced competitively, this system delivers professional features without breaking the bank, making it a smart investment for anyone serious about vehicle performance and diagnostics.
Key Features and Benefits of the AQ-1 OBDII Data Logger
The AQ-1 OBDII Data Logger is engineered to seamlessly interface with 2008-up vehicles via their OBDII port. This direct connection allows for the effortless capture of a vast array of engine and chassis parameters, eliminating the need for extensive and complicated wiring. Simply connect the provided harness, configure your desired data channels using the intuitive software, and you’re ready to start recording critical vehicle information.
Comprehensive OBDII Data Acquisition and DTC Logging
Beyond simply reading live data, the AQ-1 OBDII Data Logger excels at recording and storing this information for in-depth analysis. It captures data directly from your vehicle’s OBDII port, providing access to a wealth of parameters including engine speed (RPM), coolant temperature, manifold pressure, fuel trims, and much more. This data is invaluable for understanding engine performance under various conditions, identifying areas for improvement, and diagnosing potential issues.
A standout feature is the AQ-1’s ability to log Diagnostic Trouble Codes (DTCs) as they occur. While the software interface allows for viewing and clearing DTCs, the logger goes a step further by embedding “Stored” DTCs directly into your data logs as “Markers”. This innovative approach allows you to correlate fault codes with other performance data, pinpointing the precise conditions that triggered a fault. This feature significantly enhances diagnostic capabilities, enabling faster and more accurate troubleshooting. It’s important to note that only “Stored” DTCs from the primary engine ECU are logged, not Pending or Permanent codes.
AEMdata software interface displaying OBD-II DTC page
Expandability for Advanced Data Logging Needs
While OBDII data provides a solid foundation, the AQ-1 OBDII Data Logger is designed for expandability to meet more specialized data acquisition requirements. It features a range of inputs and connections to integrate additional sensors and modules:
- Eight Analog Inputs: Four 0-5V analog inputs are perfect for sensors like wideband AFR, boost pressure, fuel pressure, oil pressure, and various temperature sensors. These inputs also include software-selectable 2.2k pull-up resistors for thermistor-type temperature sensors. The other four analog inputs are configurable for 0-5V, 0-16.5V, or frequency, expanding compatibility for RPM, driveshaft speed, wheel speed, and turbo speed sensors.
- Three Switched Digital Inputs: These inputs can monitor on/off events such as clutch switch activation, nitrous system engagement, or line lock status.
- RS232 Serial Connection: Allows for integration with GPS devices (NMEA0183) for adding location data to your logs, or for accepting data streams from older standalone engine management systems.
- AEMnet CAN bus: This powerful feature allows for seamless “daisy-chaining” with other AEMnet-enabled devices. This includes AEM X-Series wideband controllers and gauges, 4-Channel Wideband AFR Controllers, Wideband Failsafe gauges, the Vehicle Dynamics Module (VDM) for GPS and gyroscopic data, and even AEM Infinity ECUs, Series 2, or EMS-4 EMS systems. This expandability makes the AQ-1 a truly versatile data logging platform.
Furthermore, the AQ-1 includes an integrated 3-axis accelerometer, providing valuable data on vehicle dynamics such as acceleration, braking, and cornering forces, right out of the box.
AQ-1 OBDII Data Logger rear panel showing various input connections
Intuitive Setup and User-Friendly Software
AEM understands that powerful tools should also be easy to use. The AQ-1 OBDII Data Logger is designed for straightforward setup and configuration thanks to the included, free AQ-1 Setup Software. Connecting to your vehicle is a breeze – simply provide permanent power, switched power, and ground, plug in the OBDII connector, and connect the AQ-1 unit.
The software interface is logically organized with a Navigation Tree for input channels, a Device Info area displaying data rate and memory usage, a Status Bar, and a central pane for enabling and naming logging channels. Configuring OBDII data channels is as simple as selecting the desired parameters from the available datastream. The software also allows for setting logging rates, channel names, logging conditions, calibration data, lap beacons, and more, all within easily accessible subpages. The AEMnet CAN bus integration further simplifies expansion, allowing for plug-and-play addition of channels from compatible AEM devices.
AQ-1 Setup Software interface showing channel configuration options
Powerful Data Analysis with Free AEMdata Software
The value of data logging lies in the ability to analyze the collected information effectively. AEM provides its powerful AEMdata analysis software completely free of charge with the AQ-1 OBDII Data Logger. This software boasts advanced 3D graphics and a user-friendly interface, making data review and interpretation intuitive and efficient.
AEMdata allows users to visualize vehicle, driver, and engine data through charts, customizable dashboards, gauges, and pre-defined templates. Analyzing data is as simple as dragging and dropping desired channels into the display window. Advanced features include custom math channels for derived calculations, x/y plots, histograms, and dedicated modes for circuit or stage racing analysis. Track mapping is supported via GPS data or accelerometer/vehicle speed data, and the software even includes HD video encoding to overlay data onto your driving videos.
AEMdata analysis software interface showcasing data visualization and analysis tools
AQ-1 OBDII Data Logger: Key Features at a Glance
- OBDII Compatibility: Reads and logs data from 2008-up vehicle OBDII ports.
- Unified Data Logging: All data (OBDII, sensors, AEMnet) saved to a single log file with real-time clock.
- DTC Management: Reads and clears diagnostic trouble codes.
- User-Friendly Setup: Easy configuration via free, intuitive Setup software.
- Versatile Analog Inputs: Four frequency/0-5V/0-16.5V analog inputs, and four 0-5V analog inputs with pull-up resistors.
- Digital Inputs: Three switched digital inputs (16.5V MAX).
- AEMnet Connectivity: For seamless integration with AEMnet devices.
- RS-232 Input: For GPS integration or legacy EMS system data.
- Integrated Accelerometer: Internal 3-axis accelerometer (+/- 4g MAX).
- High-Speed Logging: Logging rates up to 1000 samples/second per channel.
- Removable SD Card: 2GB SD card included (up to 32GB compatible).
- Compact and Durable: Weather-resistant design in a compact size (4.8″ x 4.55″ x 1.44″).
- Track Mapping: Built-in track mapping capability.
- Flexible Data Download: Data download via USB, weatherproof bulkhead, or SD card removal.
- Free AEMdata Software: Powerful analysis software with HD video encoding.
About AEM Performance Electronics
AEM Performance Electronics is a leading manufacturer of performance electronics, dedicated to engineering products that outperform the competition. Based in Hawthorne, CA, AEM designs, manufactures, and assembles a wide range of products including engine management systems, wideband air/fuel systems, water/methanol injection systems, performance gauges, data loggers, and more. With a commitment to innovation and quality, AEM is a trusted name in the automotive performance industry.
AEM Performance Electronics Logo
For automotive professionals and enthusiasts seeking a powerful, versatile, and user-friendly OBDII data logger, the AEM AQ-1 OBDII Data Logger is an exceptional choice. Unlock the hidden data within your vehicle and gain the insights you need to optimize performance and diagnose issues with confidence.
