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AEM

AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

    • Based on 1,847 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Trends Auto
Arrives Saturday, Jan 25
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Features

  • The X-Series wideband UEGO AFR sensor controller gauge (PN 30-0300) features a modern, visually striking faceplate and new seven-segment, center display that is 87% larger than the 30-4110 AEM
  • The gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging
  • X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition
  • Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune
  • When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred

Description

AEM's X-Series wideband UEGO Air/Fuel ratio sensor controller gauges are built upon unique, patent-pending X-Digital technology that makes them the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers.

Specs & Other Info

SpecificationDetails
BrandAEM
Construction MaterialDurable Plastic
Weight of Item1.43 pounds (0.65 Kilograms)
DesignContemporary
Accuracy of MeasurementSuperior
Installation MethodFlange Mount
Primary UseTimekeeping
ManufacturerAEM
Product Model30-0300
Origin of ManufactureChina
Product ExteriorFinely Machined
Manufacturer & OEM Part Number30-0300
Release DateNovember 18, 2015
Current StatusNot Discontinued

Frequently asked questions

The AEM X-Series UEGO Gauge is a tool used to monitor and display the air/fuel ratio (AFR) of your vehicle. This is essential for tuning and optimizing your engine performance. It ensures that your engine runs at the best efficiency, resulting in better fuel consumption, more power, and less potential for damage.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge is versatile and can be used with most vehicles that have an On-board Diagnostics (OBDII) port. However, before purchasing, it's always recommended to check if your specific vehicle model is compatible with this device.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge is known for its excellent accuracy. It uses Bosch 4.9 LSU wideband UEGO sensor and the fastest controller technology in a 52mm gauge providing real-time AFR values with less than 100 millisecond response time.

The AEM X-Series UEGO Controller Gauge is generally easy to install with appropriate mechanical experience. The package includes a complete installation manual with step-by-step instructions. However, if unsure, it's recommended to have it installed by a professional to avoid any potential damage.

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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

These reviews suggest that the product is exceptional for fine tuning engines, enhancing power, and improving overall vehicular performance. It seems convenient to install, works great after initial adjustments and provides good value for the price. Note that some users have reported issues with the bezel and recommend testing the product immediately following purchase.

Pros

  • 🔥 Considerably enhances engine performance.
  • 🔧 User-friendly installation process.
  • 💰 Provides good value for money.
  • 💡 Allows for precise tuning.

Cons

  • 😕 Some users found the bezel thick, causing aesthetic concerns.
  • ☝️ Needs immediate testing after purchase to ensure perfect functionality.
  • 🎨 Matte finish of the bezel didn't match with most interiors which may require additional modification (like painting).

Should I Buy It?

Based on the high ratings, user satisfaction, and multi-functional use, it is recommendable to purchase the product assuming the minor concerns raised aren't significant hindrances. It appears to deliver excellent results in terms of tuning and boosting performance, thereby making it a valuable addition to your automotive toolbox.

    • Easy to setup
Works like advertised
Reviewed in the United States on September 28, 2024 by Brighton
    • Accurate
Very accurate, and is the best thing I have bought for a carbureted engine. Very easy to read, and has been going strong for over a year now. No complaints.
Reviewed in the United States on October 4, 2024 by Kevin
    • Fast Very
I've been very pleased with this set up. I've had a few from different companies and, per my data logs, this one clearly responds faster than the others. That is very helpful when tuning, particularly for acceleration enrichment. The gauge is easy to read and looks good. My classic car is fuel injected now and runs a Microsquirt V3 controller and this pairs great with it. So far no problems. Very happy, recommended! ... show more
Reviewed in the United States on March 20, 2024 by G.C.B.
    • Easy to install, very accurate
Reads the same as the accessport in my sti. Replaced my innovate lc2 with this. Far more accurate, way simpler, way easier to install. Looks great, an essential for boosted cars.
Reviewed in the United States on December 31, 2024 by Thomas
    • Buy from a know supplier.
Amazon is a well known distributor so definitely a good company to buy this from since also now aem is having problems with China making knock off their products. Definitely looks simple to install.
Reviewed in the United States on January 12, 2025 by David R
    • Awesome wideband!
Installed this on my WRX so that I could tune the upper end of the MAF scale and get the AFRS dialed in. Works awesome if you wire it correctly.
Reviewed in the United States on June 1, 2024 by Payton
    • Good wideband, good customer service.
As promised, I'm updating this review based on the customer service experience. I installed this to replace a dying old 14point7 gauge and it was DOA. It just read "SEnS" when I powered it up, despite having good wiring continuity. I emailed AEM with a specific description of the issue and they had me call and arrange for a replacement, there was no hassle and the customer service people were friendly. When all was said and done, I put the new one in with the already-installed wiring and it works fine. I like the responsiveness of its output for tuning and the sweeping LED part of the display is useful for visualizing transients like acceleration enrichment when you don't have your laptop hooked up. The only negative about this unit is that the bezel is thick compared to most other wideband gauges, and based on the form factor of the actual gauge part the size of this part is pretty excessive. It's also gloss black, which doesn't match the satin/matte black of most interiors and gauge bezels, but I just had to remove the bezel and paint it to rectify this. Tip: don't go through all of the hassle of running the wires and stuff until you bench test it out of the box. That way you know it's functioning before spending a few hours fighting with grommets and taking interior parts out to run wires cleanly. ... show more
Reviewed in the United States on March 6, 2022 by T
    • Very Accurate and Reliable
This is my second unit, the first just wore out after years of use. The wire connector on the back of the gauge eventually failed from rubbing on the 'A' pillar on my truck. My fault, should have put extra wrapping on the wiring harness. The O2 sensor that comes with the gauge is a Bosch so you can't get better than that. The accuracy was still within 1% right up until the end as checked with my HP tuner unit. ... show more
Reviewed in the United States on November 28, 2023 by Tanya Algee

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