* Disclaimer: OveReview is reader-supported. We earn commissions from qualifying purchases
AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

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

AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge
$ 185.03

Score By Feature

Based on 1,314 ratings
Easy to install
9.28
Accuracy
8.90
Value for money
7.98

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.
The X-Series wideband UEGO AFR sensor controller gauge (PN 30-0300) comes with a modern, visually striking faceplate and a new seven-segment center display that is 87% larger than the
A 0-5v and RS232 Serial Port output for feedback control and data logging, as well as an AEMnet (CANbus) output for data logging, are included on the gauge.
These controllers use X-Digital wideband technology to read and report values that other controllers can't, resulting in better engine tuning and a safer overall operating condition.
A faster response time improves wideband feedback control and can result in a tune that is safer, more powerful, and accurate.
When tuning an engine on an inertia dyno with wideband AFR feedback control, dead time has an impact on the data you're looking at because it's reported in a different operating location than when it happened.

Questions & Answers

Do I require 30-minutes? Is 0310 included as well, or is this a complete list?

There's no need because the aem 30- The 0300 kit comes with everything you need to get started. The gauge has its own controller.

Selected User Reviews For AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

I bought this and it didn't work after I installed it because it didn't work out of the box
3/5

I put a 12v bench test to the test - There has been no progress. The unit is no longer alive. br>br>When I contacted the company, they advised me to request an RMA via email. They "approved" the RMA but then put it on hold for over two weeks, causing me to miss my Amazon return deadline. br>br>I had to call Amazon to get a return/refund sorted out. br>br>I was buying this to tune out a car that would have ended up with a FULL set of gauges to match, but AEM lost a customer for life, not because of a DOA product (which happens with electronics occasionally). ), but rather because of their poor customer service.

Anne Dillon
Anne Dillon
| Jul 14, 2021
I'm not going to buy another wideband because the aem 30- is where I learned to tune
5/5

4100, with a 30-year graduation. 4110, and I've tried every low-cost alternative I could think of. I've fixed a lot of innovate with E8 error codes using ish wideband from 14point7 to innovate. br>br>I'll never recommend anything else than this x-ray machine. The numbers are large, easy to read, have a lot of range from 8 to 22 gasoline afr, and they warm up and read accurately SUPER quickly; they're truly great units.

Gianni Gutierrez
Gianni Gutierrez
| Mar 27, 2021
Right out of the box, it's defective
3/5

It frequently restarts and does not power on at times, and it was acting up right out of the box. br> Aem has not returned my calls. It's been difficult to get through to a tech support representative, and I've had no luck so far. I was finally able to communicate with her via email. I've been convinced it's my gauge since the beginning, but aem said it's my sensor. I was sent a new one, but the issue still exists. I'm an expert in electrical and wiring, so I'm confident it's not a user error. Let's see if they'll replace or repair my gauge; if they do, this review will be removed and replaced with a positive one.

Brodie Gilbert
Brodie Gilbert
| Apr 02, 2021
If you've got a carburetor, this is a must-have
5/5

I finally paid for it and installed it in my pickup truck. If you have a carbureted engine, this is a must-have because it eliminates all guesswork from carburetor tuning. I was close with the carburetor settings, but after watching the gauge on the way to work and back, I was able to get it perfect in no time. I was able to quickly determine my primary and secondary jetting, as well as the accelerator pump cam to use. The kit is well-made, and both wiring harnesses come with plenty of length. I used a clamp to hold the O2 sensor bung in place. I am very pleased with my purchase.

Nova Huff
Nova Huff
| Dec 26, 2021
2016 WRX
5/5

There isn't a better wideband gauge than this! I wanted to keep an eye on my AFRs, especially when doing etune pulls. After extensive research, AEM has proven to be the most accurate gauge/sensor combination available. The x-face with green LEDs is one of my favorites. Because it strikes a good balance between stealth and visibility, the series has a lot of fans. SMY also manufactures a vent gauge pod with a factory-like appearance. like the way you look This is a gauge that I strongly recommend.

Aviana Taylor
Aviana Taylor
| Sep 12, 2021
AEM's performance was hampered by a flimsy Bosch sensor
4/5

I bought two of these and installed them on identical cars for weekend use. Seven months later, and only about 750 miles later, one of the sensors failed. br>br>The bad news is that according to AEM's website, the sensor is not covered by warranty. The sensor was possibly a dud; the car was tuned and ran exceptionally well, so I'm confident it didn't go out due to overheating; it was also installed at an angle as per the instructions. On the one hand, it's a fantastic product from aem, but not so much from Bosch. br>br>A new sensor will set me back $60-$80. On Amazon, it costs $100.

Kaylie Friedman
Kaylie Friedman
| Jan 24, 2021
So far, it hasn't worked; we'll keep you updated
3/5

The device hasn't worked in a long time. It only does one thing: it flashes L1. I've since sent the unit to AEM, who said it worked fine for them (if you unplug the O2 sensor, it says sensor and stays lit, so I don't think it's a power issue), I've since sent the unit to AEM, who said it worked fine for them. (Perhaps it's a wiring harness, but I haven't heard from them in a long time. ) I'll update once I hear back from AEM or figure out the problem or user error. Until then, it's a big waste of money to buy something out of the box because there's no way to get a refund.

Kinslee Sullivan
Kinslee Sullivan
| Nov 11, 2021
On the Suzuki Bandit 1250, it works perfectly
5/5

On my Suzuki Bandit 1250, it was installed today. Because this is spec'd for a car, the cable length is obviously excessive, but I had no trouble wrapping and tucking it away. I did make my own mount out of scrap aluminum and a pre-made template. RAM mount that already exists br>br>The AEM gauge is a small, sleek, all-digital device. I was under the impression that the rotating portion of the gauge was a mechanical dial, but it is in fact digital. It only weighs a few ounces and can be mounted almost anywhere. br>br>The 18x1 sensor is used. My motorcycle's 12mm bung was too big for it at $25. The included bung is the perfect size and welds in place with ease. br>br>The instructions that come with the kit are extremely detailed and include a variety of optional usage instructions. Overall, the packaging was adequate, and delivery was quicker than expected. Many thanks to the seller! br>br>I think this kit is a great value for the price, especially given the quality of the components and the range of operation (wideband). I'll probably buy it again for other vehicles.

Zayne Lawson
Zayne Lawson
| Dec 20, 2021

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