AEM X-Series PLUS OBDII Wideband AFR Gauge #30-0534
Fast cars demand faster response time.
Preorder for $299 with free shipping on all preorders. AEM estimates that initial shipments will begin late December 2026. Griffin Motorsports fulfillment depends on incoming inventory. Only (10) available at this pricing.
When you roll into boost, the useful part of a wideband log is seeing where the mixture changed relative to throttle, rpm, and boost. The AEM X-Series PLUS 30-0534 puts live air/fuel ratio (AFR) or lambda on a slim 52 mm gauge and sends that data to a compatible logger. It combines AEM’s updated X-Digital controller with an AEM/FAE wideband sensor and a smarter way to bring that sensor up to temperature.
Quick Take
The kit. One matte-black X-Series PLUS gauge, one factory-calibrated AEM/FAE wideband O₂ sensor, the OBDII power/I/O harness, the sensor harness, one mild-steel weld-in bung, and gauge mounting hardware.
The upgrade. Smart Power sensor warmup, selectable automatic wake modes, and support for optional exhaust backpressure compensation.
What you’ll need. A suitable 52 mm mount, a properly located exhaust bung, and power and ground. A vehicle-specific pod and the optional backpressure kit are sold separately.
Why the PLUS Makes Sense
See where the mixture moved. AEM reports a 10% improvement in wideband response compared with the original X-Series. Less delay at the controller helps you line up a fueling change with what the engine was doing at that moment. Sensor placement and logger polling rate also affect when the change shows up in your data.
Give the sensor a better cold start. Condensation in a cold exhaust can hit a hot ceramic sensor element and cause thermal shock. AEM’s staged warmup uses a gentler evaporation phase before full heating. With Smart Warmup enabled, the controller can wait for charging voltage before starting the warmup cycle. The PLUS also supports a fused direct-battery installation with a compatible automatic wake setting.
Account for exhaust pressure where it matters. Elevated pressure at the sensor can bias a wideband reading. The PLUS can use a separate exhaust pressure input to compensate, which is useful on builds where pressure at the sensor is a concern. This feature uses the optional AEM 30-2064 Exhaust Back Pressure Kit, sold separately.
Specifications & Options
Part number — AEM 30-0534, the X-Series PLUS kit with OBDII CAN connectivity
Finish — Matte black bezel and black face
Mounting size — 52 mm (2-1/16 in.) cup, 61 mm (2.40 in.) bezel
Gauge depth — 0.825 in. overall, with a 0.200 in. mounting cup
Display — Selectable AFR, lambda, or O₂ percentage, with a configurable 3- or 4-digit readout and sweeping LED indicator
Numeric display range — 8.0:1–20.0:1 gasoline AFR or 0.55–2.00 lambda
Data outputs — OBDII CAN, 0–5 V analog, AEMnet CAN, and RS-232 serial. Wired outputs require the appropriate connections.
Sensor and calibration — AEM/FAE sensor included, with factory resistor calibration and optional free-air calibration. The controller also supports the Bosch LSU 4.9.
Sensor bung thread — M18 × 1.5
AEM warranty — 12-month limited gauge warranty and 24-month extended warranty on the included AEM/FAE sensor, subject to AEM’s terms
Fitment & Installation
Vehicle fitment. Universal 52 mm gauge. OBDII logging requires a compatible 2008 or newer vehicle with CAN-based OBDII and a logger that can read the gauge’s wideband channel.
6th-gen Camaro SS and ZL1. Plan for the gauge mount, rear harness clearance, and a location for the separate wideband sensor. Contact us with your year, trim, and logger if you want help choosing a mount or mapping out the install.
Exhaust and wiring. Installation requires power, ground, sensor harness routing, and a suitable exhaust bung. Welding may be required if your exhaust needs a bung. Follow the AEM X-Series PLUS installation manual for sensor placement, wiring, and power-mode setup.
The GMS Take
If you’re buying your first wideband or replacing one, the PLUS is $14 more than our original X-Series at the preorder price. We’d spend the difference for the staged warmup and added power options. If you already run the original 30-0334, the strongest reasons to upgrade are sensor warmup control or the ability to add exhaust backpressure compensation.
Preorder the X-Series PLUS for $299 with free shipping. Still deciding? See the original AEM X-Series OBDII Wideband 30-0334.
Let’s face it, we expect a lot from our cars, and spend a lot of time trying to squeeze every last HP from them. You deserve to have the very best data, delivered in the very best set of high performance gauge’s on the market.
AEM X-Series PLUS OBDII Wideband AFR Gauge #30-0534
Fast cars demand faster response time.
Preorder for $299 with free shipping on all preorders. AEM estimates that initial shipments will begin late December 2026. Griffin Motorsports fulfillment depends on incoming inventory. Only (10) available at this pricing.
When you roll into boost, the useful part of a wideband log is seeing where the mixture changed relative to throttle, rpm, and boost. The AEM X-Series PLUS 30-0534 puts live air/fuel ratio (AFR) or lambda on a slim 52 mm gauge and sends that data to a compatible logger. It combines AEM’s updated X-Digital controller with an AEM/FAE wideband sensor and a smarter way to bring that sensor up to temperature.
Quick Take
The kit. One matte-black X-Series PLUS gauge, one factory-calibrated AEM/FAE wideband O₂ sensor, the OBDII power/I/O harness, the sensor harness, one mild-steel weld-in bung, and gauge mounting hardware.
The upgrade. Smart Power sensor warmup, selectable automatic wake modes, and support for optional exhaust backpressure compensation.
What you’ll need. A suitable 52 mm mount, a properly located exhaust bung, and power and ground. A vehicle-specific pod and the optional backpressure kit are sold separately.
Why the PLUS Makes Sense
See where the mixture moved. AEM reports a 10% improvement in wideband response compared with the original X-Series. Less delay at the controller helps you line up a fueling change with what the engine was doing at that moment. Sensor placement and logger polling rate also affect when the change shows up in your data.
Give the sensor a better cold start. Condensation in a cold exhaust can hit a hot ceramic sensor element and cause thermal shock. AEM’s staged warmup uses a gentler evaporation phase before full heating. With Smart Warmup enabled, the controller can wait for charging voltage before starting the warmup cycle. The PLUS also supports a fused direct-battery installation with a compatible automatic wake setting.
Account for exhaust pressure where it matters. Elevated pressure at the sensor can bias a wideband reading. The PLUS can use a separate exhaust pressure input to compensate, which is useful on builds where pressure at the sensor is a concern. This feature uses the optional AEM 30-2064 Exhaust Back Pressure Kit, sold separately.
Specifications & Options
Part number — AEM 30-0534, the X-Series PLUS kit with OBDII CAN connectivity
Finish — Matte black bezel and black face
Mounting size — 52 mm (2-1/16 in.) cup, 61 mm (2.40 in.) bezel
Gauge depth — 0.825 in. overall, with a 0.200 in. mounting cup
Display — Selectable AFR, lambda, or O₂ percentage, with a configurable 3- or 4-digit readout and sweeping LED indicator
Numeric display range — 8.0:1–20.0:1 gasoline AFR or 0.55–2.00 lambda
Data outputs — OBDII CAN, 0–5 V analog, AEMnet CAN, and RS-232 serial. Wired outputs require the appropriate connections.
Sensor and calibration — AEM/FAE sensor included, with factory resistor calibration and optional free-air calibration. The controller also supports the Bosch LSU 4.9.
Sensor bung thread — M18 × 1.5
AEM warranty — 12-month limited gauge warranty and 24-month extended warranty on the included AEM/FAE sensor, subject to AEM’s terms
Fitment & Installation
Vehicle fitment. Universal 52 mm gauge. OBDII logging requires a compatible 2008 or newer vehicle with CAN-based OBDII and a logger that can read the gauge’s wideband channel.
6th-gen Camaro SS and ZL1. Plan for the gauge mount, rear harness clearance, and a location for the separate wideband sensor. Contact us with your year, trim, and logger if you want help choosing a mount or mapping out the install.
Exhaust and wiring. Installation requires power, ground, sensor harness routing, and a suitable exhaust bung. Welding may be required if your exhaust needs a bung. Follow the AEM X-Series PLUS installation manual for sensor placement, wiring, and power-mode setup.
The GMS Take
If you’re buying your first wideband or replacing one, the PLUS is $14 more than our original X-Series at the preorder price. We’d spend the difference for the staged warmup and added power options. If you already run the original 30-0334, the strongest reasons to upgrade are sensor warmup control or the ability to add exhaust backpressure compensation.
Preorder the X-Series PLUS for $299 with free shipping. Still deciding? See the original AEM X-Series OBDII Wideband 30-0334.
Let’s face it, we expect a lot from our cars, and spend a lot of time trying to squeeze every last HP from them. You deserve to have the very best data, delivered in the very best set of high performance gauge’s on the market.
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