SKU: 52305019868

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

Sale price$100.03 Regular price$111.14
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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1

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Description

AEM 30-0300 FITS: X-Series Wideband UEGO AFR Sensor Controller Gauge GaugesFaster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune. AEM's Wideband Controllers with X Digital technology can reduce deadtime and improve the performance of your vehicle through more accurate AFR tuning. Deadtime is the delay between when exhaust gas composition changes and when that change is reported by the O2 sensor. While flow of exhaust gases can affect deadtime, it is not the only

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 can reduce deadtime and improve the performance of your vehicle through more accurate AFR tuning. Deadtime is the delay between when exhaust gas composition changes and when that change is reported by the O2 sensor. While flow of exhaust gases can affect deadtime, it is not the only source. Often, the sensing element’s response to the gas is the largest contributor to deadtime.When tuning an engine using wideband AFR feedback control, deadtime affects the data you are looking at because it is reported in a different operating location than when it occurred. This means whatever changes you make to the base fueling will likely be in the wrong timeframe. This can be particularly dangerous to high cylinder pressure applications, and EFI systems that use feedback control.

Warranty
Installation Instructions
Installation Instructions
  • X-Series Wideband UEGO AFR Controller Gauges were the fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers
  • 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
  • Black bezel and black double-sided faceplate included (silver bezel/white faceplate option sold separately, PN 30-0300-ACC)
  • Factory calibrated resistor does not require free-air calibration, but can be free-air calibrated
  • User-configurable display for changing between AFR, Lambda, and O2%, and 3- or 4-digit display
  • 52mm gauge diameter and slim 0.825" gauge depth(Gauge cup depth only .200" deep)
  • Auto-Sensor Detection between AEM FAE and Bosch LSU 4.9 wideband sensors
  • Patented X-Digital wideband technology (Patent 9,575,030)
  • Compatible with supply voltages up to 16V
  • Auto-dimming feature
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52305019868

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Laci
Natrona Heights, US
★★★★★ 1
Trash
Model: 17785
Ordered 2/22/26, installed2/23/26, had a gritty sound immediately, and should've asked for a replacement then but was just happy to be mobile again, 3/29/26 left me sitting on the side of the road popping starter fuses over and over... not a decent part especially since im now realizing there is zero warranty... do yourself a favor, read the reviews before you buy and dont put money in this sellers pocket
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Reviewed in the United States on March 29, 2026
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Selwyn Fisher
Waukegan, US
★★★★★ 5
Good quality and great service
Model: 17785
Quality part, met expectations.
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Reviewed in the United States on April 5, 2026
S
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Steven harris
Waukegan, US
★★★★★ 5
Great starter
Model: 17785
Great fit but I did have trouble getting the switch plug in to click into place but after that worked perfectly
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Reviewed in the United States on March 3, 2026
B
Verified Purchase
Buenas noches como esta por favor necesitamos más productos de estos Inyector de combustible DM5G-9F593-AA para Focus F iesta B-Max C-Max Ford 1.0 Ecoboost, garantía de 3 meses
Grantham, US
★★★★★ 4
La calidad
Model: 17825
Muy bien
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Reviewed in the United States on October 1, 2025
S
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Saima Rivero
Battle Creek, US
★★★★★ 5
🤗
Model: 17942
Excelente producto. Funciona perfectamente, se nota de buena calidad y la instalación fue sencilla. Llegó rápido y bien empacado. Muy satisfecho con la compra, lo recomiendo.
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Reviewed in the United States on March 19, 2026

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