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Description
AEM X-Series OBDII Wideband AFR Controller GaugeX SERIES WIDEBAND UEGO CONTROLLER FEATURES: Patented X Digital Technology makes it the Fastest Responding Wideband AFR Controller (Patent # 9,575,030) OBDII pass through provides AFR readings through the factory ECU CAN bus Ideal for users with piggyback programmers or open source tuning software Includes Bosch 4. 9LSU wideband UEGO sensor and OBDII pass through connector Use the factory 02 calibration or free air calibrate using buttons on faceplate
X-SERIES WIDEBAND UEGO CONTROLLER FEATURES:
- Patented X-Digital Technology makes it the Fastest Responding Wideband AFR Controller (Patent # 9,575,030)
- OBDII pass-through provides AFR readings through the factory ECU CAN-bus – Ideal for users with piggyback programmers or open source tuning software
- Includes Bosch 4.9LSU wideband UEGO sensor and OBDII pass-through connector
- Use the factory 02 calibration or free-air calibrate using buttons on faceplate
- Compatible with vehicle/system voltages up to 16V
- Optional outputs for 0-5V & RS232 for data logging and feedback control (requires wiring)
- Can display AFR values in hundredths of %
- 52mm gauge diameter and slim 0.825” gauge depth
- Gauge cup depth only .200” deep!
- Auto dimming feature
- User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, 3- or 4-digit display and OBDII output settings (if necessary)
- Black bezel and black dual faced faceplate included (silver bezel/white gauge option sold separately, PN 30-0300-ACC)
- Locking connectors
AFR VALUE RANGE BY FUEL TYPES:
- Display Gasoline values from 8.0:1 to 20.0:1 AFR
- Display Lambda values from .55 to 2.00
- OBDII Output Gasoline values from 8.0:1 to 20.0:1 AFR
- OBDII Output Lambda values from .55 to 2.00
- 0-5V Output Gasoline values from 8.5:1 to 18.0:1 AFR (Requires Wiring)
- 0-5V Output Lambda values from .58 to 1.23 (Requires Wiring)
- 0-5V Output E85 values from 5.7:1 to 12.0:1 AFR (Requires Wiring)
- 0-5V Output Ethanol values from 5.2:1 to 11.0:1 AFR (Requires Wiring)
- 0-5V Output Methanol values from 3.75:1 to 8.0:1 AFR (Requires Wiring)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Reasonably priced.
Color: Silver Face Brown Band-G8408
Bought this for husband for Christmas, he loves it. It’s very handsome.
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Reviewed in the United States on January 21, 2026
★★★★★ 4
Would recommend for casual show.
Color: 8405-Blue
It is very nice, I have many watches, but this one is the main one I use for casual wear. One thing I do not like: After about two days of either use or not use, the time gets off, by a couple hours but you can put it back pretty easily. And the "day display" on the watch never stays correct due to the fact that every month doesn't have 31 days in it. But other than that, it is a great watch for show, not to keep track of time.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Money Well Spent
Color: Silver Face Brown Band-G8408
I love this little watch, I can count on it every time one of my $10,000 watches stops working. The thing just sits in the drawer and waits for me, I was going to give it to a small child as a gift. I changed my mind only because it's good to know I have a dependable watch somewhere. I guess I'll have to pay attention to the battery at some point but I will change the battery and not just toss the watch..
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Watch
Color: 8405-White
Watch looks great. The watch works great.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
The printing is too small
Color: 8405-Blue
I’m unable to see the instructions or set the eatch
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Reviewed in the United States on April 26, 2026