SKU: 55483922548

AEM Electronics Gauge OBDII Wideband AFR

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Description

AEM Electronics Gauge OBDII Wideband AFRAEM's X Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30 0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN bus stream that is output by the factory ECU, and deliver the most accurate, safe and powerful tune. The 30 0334 X Series OBDII Wideband Gauge is validated to work with EFILive, HPTuners and DashDaq software. The X Series Wideband AFR OBDII Gauge

AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN-bus stream that is output by the factory ECU, and deliver the most accurate, safe and powerful tune. The 30-0334 X-Series OBDII Wideband Gauge is validated to work with EFILive, HPTuners and DashDaq software.

The X-Series Wideband AFR OBDII Gauge includes an OBDII pass-through connector and Bosch 4.9LSU sensor that can be free-air calibrated or used with the factory resistor calibration. Additional wiring for a 0-5v or RS232 Serial output can be added by the user for outputting to a data logger. This OBDII pass-through capability replaces the traditional AEMnet stream available in the 30-0300 X-Series Wideband AFR Gauge Controller.

OBDII CAN-bus OUTPUT
The OBDII output simulates an auxiliary ECU signal when plugged into a vehicle's OBD port, which requires a unique address from the other ECUs already on a vehicle's network. AEM's default OBDII CAN address will work with most popular vehicles and adjustments should not be necessary. However, AEM has provided OBDII address programmability through the buttons on the gauge face if a different address other than the default address is required, allowing users to program ECU #, Parameter Identification (PID), Message Identifier, and Bit Rate.

PATENTED X-DIGITAL TECHNOLOGY - It's The Fastest
X-Series Widebands are the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers.* The controller's high speed, patented, X-Digital technology (Patent 9,575,030) ensures no loss of signal fidelity and full transient response, making it able to identify the slightest fluctuations in AFR and output them in full value.

WHY RESPONSE TIME MATTERS
Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune. AEM's Wideband Controllers with X-Digital technology reduce deadtime and can improve the performance of your vehicle through more accurate AFR tuning.

FACTORY CALIBRATION RESISTOR OR FREE-AIR CAL, IT'S YOUR CHOICE!
X-Series Wideband Gauges and the X-Series Inline Controller support the popular Bosch 4.9LSU sensor, and can utilize both the factory calibration resistor and free-air calibration methods. This allows users to take advantage of the precise factory resistor calibration when a sensor is new but then allows for free-air calibrations if the user desires when the sensor ages.** It's the perfect marriage of simplicity and accuracy!

WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?
AEM's Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced "You-Way-Go") Controllers are powerful, cost effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine.

WHY USE A WIDEBAND AIR/FUEL CONTROLLER?
Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air/fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly accurate, reliable wideband air/fuel controllers that can help ensure your vehicle is optimally tuned.

CAN I CHANGE THE AEM UEGO SENSOR'S CONNECTOR?
No. There is a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 55483922548

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4.9 ★★★★★
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Product Reviews
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Verified Purchase
CnR
Cuba, US
★★★★★ 5
Well-built MacBook Stand to Help Eliminate Ergonomic Problems
Color: silver
Like so many people these days, a lot of my life revolves around being on my laptop. Like so many people these days, all that time hunched over a laptop was causing physical discomfort. Once I realized the source of my problems and reading up on solutions to common laptop ergonomics problems, I chose this laptop stand as one of my tools to correct the ergonomics issues facing me, and eight months later I am happy to inform you that this has done its job well. Fortunately, I was already using my laptop on a standard-height desk, but having the screen at desk height (30" off the floor) was the major source of neck pain for me. At its lowest setting (the knob all the way to the left), it raises my 13-inch MacBook Pro about 5-3/4" off the table (measured to the bottom of the aluminum body that covers the back of the laptop screen). Note that if your MacBook has a different depth (measured from front to back), the amount your screen is raised will be a little different. At the highest setting (knob to the right), the screen is raised about 7-1/2" off the table. I am just over 6' tall and tend to find that my neck is able to maintain a comfortable neutral position when the knob in the right third of the slide, but of course that varies according to each user, their sitting position, and own comfort zone. All-in-all, this provides a really great range of screen heights that is likely to fit most peoples' needs, especially on 30" height desk. I think the pictures do a great job of covering aesthetics (that is certainly a big part of this purchase). It is high-quality aluminum, and like all aluminum, it is a fairly soft, scratch-prone metal. Mine has remained in nearly new condition after 8 months, and it maintains a clean look that looks almost looks like an Apple product. If you have one of the newer space gray or colored-aluminum MacBooks, that might obviously be an issue. Mechanically, the stand is solid. There are no indents or notches in the slide. There is a slight spring to the upper "lever" of the base such that if you have the knob set to the lower positions, the upper part of the base springs upward to the highest position when the laptop is removed. In the highest position, the stand is already at its highest position, and there is no movement. I suspect that the spring is actually to help the upper arm move upward as the knob is slid to higher positions. One caveat for use of this stand should be used with an external mouse and keyboard. Of course, Apple's Magic line of keyboards, mice, and trackpads work well with this, but the point is that when the laptop is raised, it is no longer comfortable (or ergonomic) to use the laptop's keyboard and trackpad. Overall, this product delivers in every way I need. The price is on the high side, but I hope it will last through the life of this laptop and at least one replacement or three (and maybe even the days when the laptops become archaic relics of the past). The range of screen lift (about 5-3/4" to 7-1/2") suits me well (and I suspect, will suit a large number of people) and the aesthetics are a great match for MacBook users.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2017
C
Verified Purchase
ChiGirl
Lexington, US
★★★★★ 5
Very sturdy and sleek looking laptop stand
Color: silver
I was skeptical when I first ordered this. It didn't look very sturdy in the pics, but I was wrong. It is very sleek looking and functional, with the adjustable height. Very modern looking as well and my MacBook Pro fits perfectly on it. Very glad to have purchased this for my home office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2024
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Verified Purchase
Susan Pomeroy
Birmingham, US
★★★★★ 4
Sturdy, works great, not quite perfect.
Color: silver
This was the perfect stand to use when my desktop computer crashed and I had to work on my laptop without killing my neck. It's sturdy, well made, and works exactly as advertised. Adjustment is smooth and simple. I was able to work with my monitor at a comfortable height and distance, and it saved my bacon! But, would I want to work on it indefinitely? No. Two things are lacking for me. First, there's a height adjustment, but no angle control. This means that at its max height, the display has a small downward tilt. It also means that on zoom calls, I had to fiddle with the monitor height until my whole head was framed, rather than cut off. Not a dealbreaker, but annoying over the long term, especially with lots of zoom meetings. Second, I'm not sure why I was surprised, but the stand-plus-laptop combo created a kind of aluminum "monolith" on my desktop. I couldn't bend to peer under it, or over it either. It felt as though part of my desk (albeit a narrow portion) became inaccessible. This too is a quibble--I just happen to like a more open and airy feeling. These two nits aside, this is a sturdy and well designed stand that works well and will last a long time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
E
Verified Purchase
Elizabeth
Battle Creek, US
★★★★★ 5
Replacement stickers are on the way!!
Color: silver, Color: silver
Edit: Customer service was lovely and I have replacement stickers on the way. This fabulous product has helped me so much and I can't be without it. Back up to a 5 star review. I purchased this product in April 2024. The stickers that help the laptop 'grab' onto the stand are either gone or unstable. See picture below. Can it be repaired with new stickers? How do I get them?
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Reviewed in the United States on July 19, 2025
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Verified Purchase
ProudPapa
Omaha, US
★★★★★ 5
Sixty Bucks? Yep. And I'd buy another one.
Color: silver
OK, I had my doubts. Yes, the iLevel2 is highly-reviewed. And yes, it's really (really) important to have your laptop screen at eye level (get it? iLevel?) But spending 60 dollars on an adjustable laptop stand? Couldn't I just pile up a couple of old books for free? Well, as a contractor once told me when I made a really dumb suggestion, "You COULD do it that way..." The iLevel2's main virtue is that the angle/height adjustment knob is rock-solid, as is the platform. It's just an extremely well-made, solid product. And the adjustment knob, which is on a left-right track on the front of the product, allows you to dial in your laptop's screen height to the millimeter. Result: a totally-custom, ergonomically-friendly setup. Love it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2024

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