---
product_id: 27233556
title: "30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller"
price: "€ 449.94"
currency: EUR
in_stock: true
reviews_count: 6
url: https://www.desertcart.hr/products/27233556-30-0310-x-series-inline-wideband-uego-afr-sensor-controller
store_origin: HR
region: Croatia
---

# Fastest response time Multi-output: 0-5V, RS232 & CANbus Weather-resistant low-profile enclosure 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller

**Price:** € 449.94
**Availability:** ✅ In Stock

## Summary

> ⚙️ Tune like a pro, dominate the road with precision AFR control!

## Quick Answers

- **What is this?** 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller
- **How much does it cost?** € 449.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/27233556-30-0310-x-series-inline-wideband-uego-afr-sensor-controller)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tune Smarter, Not Harder:** Faster response and unique digital readings minimize dead time, giving you real-time insights for peak power and reliability.
- • **Unmatched Digital Accuracy:** Patent-pending X-Series tech delivers measurement accuracy down to 0.1 AFR for safer, optimized engine performance.
- • **Built to Brave the Elements:** Weather-resistant, sleek inline design ensures durability and seamless integration under the hood.
- • **Lightning-Fast AFR Feedback:** Experience ultra-quick air/fuel ratio readings for precision tuning that leaves competitors behind.
- • **Versatile Data Connectivity:** Multiple output options including 0-5V, RS232 serial, and AEMnet CANbus for advanced data logging and control.

## Overview

The AEM 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller is a cutting-edge automotive tuning tool featuring patent-pending digital technology for the fastest and most accurate air/fuel ratio readings. Its weather-resistant, low-profile stainless steel enclosure houses multi-output connectivity (0-5V, RS232, CANbus) enabling seamless integration with data logging and engine management systems. Designed for professional-grade engine tuning, it offers a measuring range of 10.0:1 to 20.0:1 AFR with 0.1 accuracy, ensuring safer and more powerful engine operation.

## Description

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

Review: Quality product - but there is a learning curve to this - I installed the aem 30-310 in my 2006 cobalt ss with a stage 3 kit from a well known company. I have the long tube downpipe option with an extra bung installed (by the same company) so that I could add a WB sensor. Things I learned: 1) AEM documentation and tech support make it clear the WB sensor install orientation needs to be at a minimum of 10deg above horizon... or 10 o'clock to 2 o'clock. My bung is installed with a horizontal to negative inclination. Not good for long term use (as I discovered - see below). 2) The rs-232 output will give AFR readings only (numerically, this will be something like 14.65 at idle for unleaded gas with no ethanol). To get lambda, you need to divide by 14.65 in your scanner software. So, when setting up the sensor in HPtuners, expect to see a numerical value around 14.xx EVEN if you select lambda in HPtuners. The rs-232 simply puts out AFR values. 3) The rs-232 output description in the included manual describes how the numerical output can be lambda IF the "display mode" is changed. AEM tech support said this was a copy/paste error since the AEM 30-0310 doesn't operate with a gauge. 4) When wiring up the rs-232 adapter, make sure you use pins 2 and 5. I initially wired up to pins #1 and #4 because I was thrown off by the graphical depiction of the rs-232 serial output in the manual. The manual shows the graphical orientation of the pins as it goes into the computer/laptop. I thought it was showing the orientation of the harness/pigtail I created (that comes from the sensor). Oops. 5) I bought an rs-232/USB 2 adapter from Sabrent on desertcart. In the end, somehow it worked without installing any extra drivers. It should turn up as "Prolific usb to serial comm port" under "ports" in device manager. Sabrent tech support indicated that windows 10 is no longer actively supporting rs-232 - and is being treated as a carry-over legacy feature for now. All that to say - this is 2021 - and using rs-232 is pretty old-school. 6) After about 1 week of use, the WB stopped working. I removed it and it was pretty caked up with soot. I washed/sprayed it with brake cleaner and re-installed it. It started working again. When I contacted AEM, they indicated that it was not chemically cleanable and that I was fortunate that my brake cleaner idea worked. They suggested bushing it off with a cloth. That wouldn't work for me since it was fully clogged with soot. 7) There is a company on desertcart that sells the WB sensor replacement (aem 30-2004) - and they claim that the sensor needs a warmup period to help extend the life of the sensor and prevent soot build-up. AEM tech support would not support such a claim and said that a warmup is not required. In the end, the product is of high quality. But for me it will not have long term reliability due to my poor bung install (which is not the fault of AEM).
Review: Much better than my old LC2 - My old LC2 controller was murdering sensors left and right. I have only killed one sensor with this controller and that was from me not thinking about it and bouncing the car off the launch limiter when the exhaust was still cold. (Engine was warm still, but -10F makes the exhaust cool off quicker than I thought.)

## Features

- X-Series Inline Wideband UEGO AFR Controller were fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitors wideband AFR controllers
- Patented X-Digital technology (Patent 9,575,030)
- Includes Bosch 4.9LSU wideband UEGO sensor
- Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
- Compatible with vehicle/system voltages up to 16V
- 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
- Weather-resistant, low profile design

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0184TLVL0 |
| Best Sellers Rank | #506,530 in Automotive ( See Top 100 in Automotive ) #2,687 in Automotive Replacement Oxygen Sensors |
| Brand | AEM |
| Brand Name | AEM |
| Customer Reviews | 4.5 out of 5 stars 42 Reviews |
| Global Trade Identification Number | 00840879024475 |
| Included Components | X-Series Inline Wideband UEGO AFR Sensor Controller |
| Item Type Name | AEM 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller |
| Item Weight | 0.68 Kilograms |
| Manufacturer | AEM |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Maximum Supply Voltage | 5 Volts |
| Measurement Accuracy | 0.1 AFR |
| Measuring Range | 10.0:1 to 20.0:1 |
| Model | 30-0310 |
| Mounting Type | Inline |
| Output Type | Digital |
| Part Interchange Info | 30-0310 |
| Part Number | 30-0310 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Automotive engine tuning and monitoring |
| Style | Music |
| Style Name | Music |
| UPC | 840879024475 |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty |

## Product Details

- **Brand:** AEM
- **Item Weight:** 0.68 Kilograms
- **Material:** Stainless Steel
- **Maximum Supply Voltage:** 5 Volts
- **Style:** Music

## Images

![30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller - Image 1](https://m.media-amazon.com/images/I/614YWYJCLIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product - but there is a learning curve to this
*by W***I on October 11, 2021*

I installed the aem 30-310 in my 2006 cobalt ss with a stage 3 kit from a well known company. I have the long tube downpipe option with an extra bung installed (by the same company) so that I could add a WB sensor. Things I learned: 1) AEM documentation and tech support make it clear the WB sensor install orientation needs to be at a minimum of 10deg above horizon... or 10 o'clock to 2 o'clock. My bung is installed with a horizontal to negative inclination. Not good for long term use (as I discovered - see below). 2) The rs-232 output will give AFR readings only (numerically, this will be something like 14.65 at idle for unleaded gas with no ethanol). To get lambda, you need to divide by 14.65 in your scanner software. So, when setting up the sensor in HPtuners, expect to see a numerical value around 14.xx EVEN if you select lambda in HPtuners. The rs-232 simply puts out AFR values. 3) The rs-232 output description in the included manual describes how the numerical output can be lambda IF the "display mode" is changed. AEM tech support said this was a copy/paste error since the AEM 30-0310 doesn't operate with a gauge. 4) When wiring up the rs-232 adapter, make sure you use pins 2 and 5. I initially wired up to pins #1 and #4 because I was thrown off by the graphical depiction of the rs-232 serial output in the manual. The manual shows the graphical orientation of the pins as it goes into the computer/laptop. I thought it was showing the orientation of the harness/pigtail I created (that comes from the sensor). Oops. 5) I bought an rs-232/USB 2 adapter from Sabrent on amazon. In the end, somehow it worked without installing any extra drivers. It should turn up as "Prolific usb to serial comm port" under "ports" in device manager. Sabrent tech support indicated that windows 10 is no longer actively supporting rs-232 - and is being treated as a carry-over legacy feature for now. All that to say - this is 2021 - and using rs-232 is pretty old-school. 6) After about 1 week of use, the WB stopped working. I removed it and it was pretty caked up with soot. I washed/sprayed it with brake cleaner and re-installed it. It started working again. When I contacted AEM, they indicated that it was not chemically cleanable and that I was fortunate that my brake cleaner idea worked. They suggested bushing it off with a cloth. That wouldn't work for me since it was fully clogged with soot. 7) There is a company on amazon that sells the WB sensor replacement (aem 30-2004) - and they claim that the sensor needs a warmup period to help extend the life of the sensor and prevent soot build-up. AEM tech support would not support such a claim and said that a warmup is not required. In the end, the product is of high quality. But for me it will not have long term reliability due to my poor bung install (which is not the fault of AEM).

### ⭐⭐⭐⭐⭐ Much better than my old LC2
*by Z***K on May 11, 2019*

My old LC2 controller was murdering sensors left and right. I have only killed one sensor with this controller and that was from me not thinking about it and bouncing the car off the launch limiter when the exhaust was still cold. (Engine was warm still, but -10F makes the exhaust cool off quicker than I thought.)

### ⭐⭐⭐⭐⭐ Quality Product!
*by N***Y on January 24, 2018*

Great product, calibration process very simple and very accurate!

## Frequently Bought Together

- AEM 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller
- HP Tuners PROLINK+ Cable with Analog and CAN Bus inputs for External Sensors Using MPVI2+ and MPVI3 OBD2 Scan Tools, Cable Only

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-05*