AEM’s X-Series Wideband UEGO Air/Fuel Ratio Sensor Controller Gauges
are built upon unique, patented 100% Digital technology (Patent
9,575,030) that makes them the fastest responding wideband air/fuel
ratio controllers in independent testing*.
The X-Series Wideband
UEGO AFR Sensor Controller Gauge (PN 30-0300) measures 2 1/16th-inch
(52mm) in diameter and features a modern, visually striking faceplate
and new seven-segment center display that is 87% larger than the 30-4110
AEM Wideband Gauge’s center display. This creates the perception of a
larger overall gauge, but in a common 52mm size for easy mounting. Its
slim depth (less than one inch overall) and ultra-slim cup depth of
.200-inches dramatically increases its application base and potential
The X-Series Wideband UEGO AFR Gauge has a
user configurable display via buttons on the gauge face that allows you
to change AFR values for different fuels, Lambda or O2%, change the
center display to three or four digits, perform a free-air calibration
if desired as the sensor ages, and change the CAN message ID when
linking multiple X-Series Inline Controllers or X-Series Controller
Gauges. A black bezel and black dual-faced faceplate for air/fuel and
Lambda are included, and an optional silver bezel with white dual-faced
air/fuel and Lambda faceplate is available (PN 30-0300-ACC, sold
separately). An Auto Dimming feature is included. Locking connectors
ensure a positive connection between the harnesses and gauge and a new
single board design adds to the new gauge’s durability.
includes a 0-5v and RS232 Serial Port output for feedback control and
data logging, and an AEMnet (CANbus) output for data logging. AEMnet
allows additional X-Series Wideband Controllers to be daisy chained
together (up to 16 cylinders) for recording AFR in multiple cylinders.
It supports vehicle/system voltages up to 16V, and can be used on EFI or
carbureted applications, and dynamometers in applications using
gasoline, methanol, ethanol, Diesel, propane, and CNG.
wideband technology gives these controllers the ability to read and
report values that other controllers do not, which can deliver more
optimized engine tuning and a safer overall operating condition. The
controller’s high-speed digital implementation ensures no loss of signal
fidelity and full transient response, making it able to identify the
slightest fluctuations in AFR and output them in full value.
WHY RESPONSE TIME MATTERS
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 (transport delay)
can affect deadtime, it is not the only source. Often, the sensing
elements response to the gas is the largest contributor to deadtime when
an engine is in high RPM under load.
When tuning an engine using
wideband AFR feedback control on an inertia dyno, deadtime affects the
data you are looking at because it is reported in a different operating
location than when it actually occurred. This means with long deadtimes, whatever changes you make to the base fueling will likely be in the wrong location.
This can be particularly dangerous to high compression and high-boost
forced induction vehicles, and EFI systems that use feedback control to
Reducing deadtime improves wideband feedback control, and can provide a safer, more powerful and accurate tune.
AEM’s Wideband Controllers with X-Series digital technology can reduce
deadtime and improve the performance of your vehicle through more
accurate AFR tuning.
FACTORY CALIBRATION RESISTOR OR FREE-AIR CAL, IT’S YOUR CHOICE!
X-Series Wideband Gauge and X-Series Inline Controller support the
popular Bosch 4.9LSU sensor and can utilize both the factory calibration
resistor and free-air calibration methods**. This allows users to take
advantage of the precise factory resistor calibration when a sensor is
new but then allows for free-air calibrations if the user desires when
the sensor ages. It’s the perfect marriage of simplicity and accuracy!
WHAT IS A WIDEBAND UEGO AIR/FUEL CONTROLLER?
Wideband UEGO (Universal Exhaust Gas Oxygen, pronounced “You-Way-Go”)
Controllers are powerful, cost-effective tuning tools that allow users
to accurately monitor the Air/Fuel Ratio (AFR) of their engine.
WHY USE A WIDEBAND AIR/FUEL CONTROLLER?
AFR data is critical when tuning an engine. Running rich (very low
air/fuel ratio, excessive fuel) can cause a loss in power, while running
too lean (very high air/fuel ratio, not enough fuel) may result in
serious engine damage. Using a wideband air/fuel controller during the
tuning process allows you to monitor AFR and adjust tuning parameters to
optimize them for maximum power and efficiency. AEM has a comprehensive
line of highly accurate, reliable wideband air/fuel controllers that
can help ensure your vehicle is optimally tuned.
CAN I CHANGE THE AEM UEGO SENSOR’S CONNECTOR?
There is a laser-etched, calibrated resistor in the sensor’s connector
body. This resistor is specifically created for the exact sensor that it
is attached to. Modifying this will invalidate the sensor’s output.
Independently tested at 360° Product Testing (results reported on
August 31st, 2015) against 17 competitors wideband UEGO Air/Fuel
Controllers. AEM X-Series Inline with Bosch 4.9LSU wideband sensor and
AEM X-Series Wideband UEGO AFR Gauge with Bosch 4.9LSU sensor recorded
the fastest response times.
** Wideband UEGO sensors are wear items
and their lifespan is determined by many factors including contamination
from leaded fuels, automotive fluids, particulates, mechanical or
thermal shock and from being unheated and exposed to the exhaust stream.
Free-air calibration may correct drift as a sensor ages, but it is
recommended that they are replaced as part of your vehicle’s maintenance
program. When performing free-air calibration, please follow the
procedure outlined in the instruction manual.