The AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) is engineered for today’s performance tuners and automotive enthusiasts. Whether you’re working with piggyback tuning modules or diving deep with open-source software, this gauge provides a crucial window into your engine’s air-fuel ratio (AFR) directly through your vehicle’s factory CAN-bus stream. By accurately displaying AFR data, the X-Series gauge empowers you to achieve the most precise, safe, and powerful engine tune possible. Notably, the 30-0334 X-Series OBDII Wideband Gauge is validated to work seamlessly with HP Tuners VCM Suite, a testament to its reliability and performance.
This advanced wideband AFR gauge kit includes everything you need for a straightforward installation and immediate performance monitoring. It features an OBDII pass-through connector and the industry-leading Bosch 4.9LSU sensor. This sensor offers flexibility with both free-air calibration and factory resistor calibration options. For users requiring advanced data logging capabilities, the gauge also provides additional wiring options for 0-5v or RS232 Serial output. This allows for seamless integration with external data loggers. A key distinction from the standard AEM X-Series Wideband AFR Gauge Controller (30-0300) is the inclusion of OBDII pass-through, replacing the traditional AEMnet stream, making it exceptionally convenient for modern vehicles.
Direct OBDII CAN-bus Integration for Simplified AFR Monitoring
The X-Series OBDII Wideband Gauge simplifies AFR monitoring by leveraging your vehicle’s existing OBDII port. When connected, it effectively simulates an auxiliary ECU signal, transmitting vital AFR data directly through the factory CAN-bus network. To ensure compatibility and prevent conflicts, the gauge operates on a unique address within the vehicle’s network. AEM’s pre-programmed default OBDII CAN address is designed to work flawlessly with the vast majority of vehicles, eliminating the need for complex adjustments. However, recognizing that some setups may require customization, AEM has incorporated OBDII address programmability directly into the gauge. Using the intuitive buttons on the gauge face, users can easily adjust ECU #, Parameter Identification (PID), Message Identifier, and Bit Rate settings as needed. Important: Please confirm that your vehicle utilizes a CAN-bus system, as this is a prerequisite for the X-Series OBDII Wideband Gauge to function correctly.
Patented X-Digital Technology: Unrivaled Speed and Accuracy in AFR Measurement
At the heart of the AEM X-Series Wideband Gauge lies patented X-Digital Technology. This groundbreaking technology sets a new benchmark for response time, making the X-Series the fastest responding wideband air/fuel ratio controller in rigorous independent testing against 17 competing wideband UEGO air/fuel controllers.* The controller’s high-speed, fully digital implementation is engineered to maintain signal integrity and ensure complete transient response. This means the gauge accurately captures even the most subtle and rapid fluctuations in AFR, displaying them in real-time with absolute precision.
Why Milliseconds Matter: The Importance of Fast Response Time
In performance tuning, response time is not just a specification; it’s a critical factor that directly impacts tuning accuracy and engine safety. A faster response time from your wideband controller translates to more effective wideband feedback control. This enhanced feedback loop allows for finer, more precise adjustments to your engine’s fuel delivery, resulting in a safer, more powerful, and ultimately more accurate engine tune. AEM Wideband Controllers equipped with X-Digital technology minimize dead time, directly contributing to improved vehicle performance through optimized AFR tuning.
Bosch 4.9LSU Sensor: Choose Factory Calibration or Free-Air Calibration
The X-Series Wideband Gauges and the X-Series Inline Controller are designed for versatility and accuracy, supporting the widely respected Bosch 4.9LSU sensor. Users benefit from the flexibility to choose between two calibration methods: utilizing the precise factory calibration resistor or performing a free-air calibration. The factory resistor calibration offers maximum accuracy right out of the box, ideal when using a new sensor. For sensors that have aged over time, free-air calibration provides a method to maintain accuracy.** This dual-calibration capability provides the perfect balance of initial ease of use and long-term precision.
Understanding Wideband UEGO Air/Fuel Controllers
AEM Wideband UEGO (Universal Exhaust Gas Oxygen) Controllers are essential tools for anyone serious about engine tuning. These cost-effective devices provide the ability to accurately monitor your engine’s Air/Fuel Ratio (AFR). Understanding and precisely controlling AFR is paramount for achieving peak engine performance and longevity.
Why Invest in a Wideband Air/Fuel Controller?
Accurate AFR data is indispensable for effective engine tuning. An excessively rich air/fuel mixture (too much fuel, low AFR) can lead to reduced power output and fuel inefficiency. Conversely, a lean mixture (insufficient fuel, high AFR) can cause dangerously high combustion temperatures, potentially resulting in severe engine damage. By integrating an AEM wideband air/fuel controller into your tuning process, you gain real-time AFR monitoring. This crucial data empowers you to make informed adjustments to your engine’s tuning parameters, optimizing for maximum power, fuel efficiency, and engine safety. AEM offers a comprehensive range of high-accuracy, dependable wideband air/fuel controllers specifically designed to help you achieve and maintain an optimally tuned vehicle.
Important Note on Sensor Connectors: Do Not Modify
It is crucial to never alter the AEM UEGO sensor’s connector. Each sensor connector houses a laser-etched, calibrated resistor that is meticulously matched to the specific sensor it is attached to. Any modification to this connector will compromise the sensor’s calibration and invalidate its output, leading to inaccurate AFR readings and potentially damaging tuning decisions.
*Independently tested at 360° Product Testing (results reported on August 31st, 2015) against 17 competitor wideband UEGO Air/Fuel Controllers. AEM X-Series Inline with Bosch 4.9LSU wideband sensor and AEM X-Series Wideband UEGO AFR Gauge with Bosch 4.9LSU sensor recorded the fastest response times.
**Wideband UEGO sensors are consumable items, and their lifespan is influenced by various factors including contamination from leaded fuels, automotive fluids, particulates, mechanical or thermal shock, and exposure to the exhaust stream when unheated. While free-air calibration can compensate for sensor drift as it ages, regular replacement as part of your vehicle’s maintenance program is recommended. Always adhere to the free-air calibration procedure outlined in the instruction manual.
Key Features of the X-Series Wideband UEGO Controller:
- Patented X-Digital Technology: Ensures the fastest response time of any wideband AFR controller (Patent # 9,575,030).
- OBDII Pass-Through: Delivers AFR readings via the factory ECU CAN-bus – ideal for piggyback programmers and open-source tuning software.
- Bosch 4.9LSU Wideband UEGO Sensor & OBDII Pass-Through Connector Included: Complete kit for immediate installation.
- Selectable Calibration: Choose factory 02 calibration or free-air calibration using gauge face buttons.
- Wide Voltage Compatibility: Compatible with vehicle/system voltages up to 16V.
- Optional Outputs: Provides 0-5V & RS232 outputs for data logging and feedback control (wiring required).
- High-Resolution Display: Displays AFR values in hundredths of %.
- Compact Gauge Size: 52mm gauge diameter and slim 0.825” gauge depth, with a gauge cup depth of only .200”.
- Auto-Dimming: Automatically adjusts display brightness for optimal viewing.
- User-Configurable Display: Customize display via gauge face buttons to show AFR, Lambda and O2%, 3- or 4-digit display, and OBDII output settings (if needed).
- Included Bezels and Faceplates: Comes with black bezel and black dual-faced faceplate (silver bezel/white gauge option available separately, PN 30-0300-ACC).
- Locking Connectors: Ensures secure and reliable connections.
AFR Value Ranges by Fuel Type:
- Gasoline Display: 8.0:1 to 20.0:1 AFR
- Lambda Display: .55 to 2.00
- OBDII Output Gasoline: 8.0:1 to 20.0:1 AFR
- OBDII Output Lambda: .55 to 2.00
- 0-5V Output Gasoline: 8.5:1 to 18.0:1 AFR (Wiring Required)
- 0-5V Output Lambda: .58 to 1.23 (Wiring Required)
- 0-5V Output E85: 5.7:1 to 12.0:1 AFR (Wiring Required)
- 0-5V Output Ethanol: 5.2:1 to 11.0:1 AFR (Wiring Required)
- 0-5V Output Methanol: 3.75:1 to 8.0:1 AFR (Wiring Required)
