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AEM Wideband Air/Fuel UEGO

What does UEGO mean? Does your car have a wideband from the factory? Think an $80 Air/Fuel gauge is any good? Find out these answers and more...

  1. AEM Wideband Air/Fuel UEGO Controllers


  1. AEM Wideband Air/Fuel UEGO Controllers


     
    What is a wideband air/fuel UEGO Sensor?
     
    Why do I need a wideband air/fuel ratio sensor controller?
     
    I saw an O2 gauge online for $80, isn't this the same thing?
     
    I have an aftermarket fuel injection computer. Can I use an AEM Wideband Air/Fuel Controller Module or AEM Wideband Air/Fuel Gauge with it?
     
    My AEM engine management system includes a wideband air/fuel controller. How can I monitor my AFR in real time?
     
    Can I use a different wideband air/fuel sensor than the one supplied?
     
    Where do I get a new wideband air/fuel sensor for my AEM Wideband Air/Fuel Controller from when mine goes bad?
     
    I have a four-cylinder car. Which AEM Wideband Air/Fuel Controller should I use?
     
    I have a V6, V8, V10 or V12 car. Which AEM wideband UEGO Controller should I use?
     
    Do I still need to run my factory exhaust gas sensor if I have an AEM Wideband Air/Fuel Controller?
     
    Will my nitrous oxide system damage the wideband air/fuel sensor?
     
    What is the warranty on AEM electronics?

     


     

    Q:  What is a wideband air/fuel UEGO Sensor?
    A:  UEGO is an acronym for Universal Exhaust Gas Oxygen sensor. It is the most accurate, fastest responding type of Air/Fuel Ratio (AFR) sensor available on the market today. UEGO sensors should not be confused with common “switch” type O2 sensors equipped in OEM vehicles that are designed to work within the parameters of a factory engine management calibration.
     
    Q:  Why do I need a wideband air/fuel ratio sensor controller?
    A:  If you are going to modify your engine in any way, knowing the Air/Fuel Ratio (AFR) is critical to achieve the best performance, and to prevent leaning out and potentially destroying the motor.
     
    Q:  I saw an O2 gauge online for $80, isn't this the same thing?
    A:  NO! The vast majority of O2 sensors are of a simple "switch" type. These sensors can only indicate whether your engine is running rich or lean, but not what your actual AFR reading is. For tuning purposes, these types are sensors are useless.
     
    Q:  I have an aftermarket fuel injection computer. Can I use an AEM Wideband Air/Fuel Controller Module or AEM Wideband Air/Fuel Gauge with it?
    A:  Yes. It has a 0-5v output so you can simply hook up the wideband air/fuel module to the O2 sensor input wire of your fuel injection computer.
     
    Q:  My AEM engine management system includes a wideband air/fuel controller. How can I monitor my AFR in real time?
    A:  You can use our Serial Datastream Gauge to monitor your AFR in real time. Our Serial Gauge works with AEM EMS systems only.
     
    Q:  Why does the controller include a sensor and a module? Is the module a heater controller?
    A:  UEGO-type air/fuel ratio sensors output a small current that must be conditioned and corrected based on a number of operating parameters. This is what the module does. Without the module, the sensor is useless. The majority of the sensor’s "brains" are in the module. Also included in the module is the heater controller, but it is only one part of the controller.
     
    Q:  Can I use a different wideband air/fuel sensor than the one supplied?
    A:  No. The supplied Bosch sensor is calibrated specifically for AEM Wideband Air/Fuel controllers.
     
    Q:  Where do I get a new wideband air/fuel sensor for my AEM Wideband Air/Fuel Controller from when mine goes bad?
    A:  You can purchase a new Bosch sensor for your AEM Wideband Air/Fuel Controller from one of our distributors, or by using the “Buy Now” feature on our website. The part number for a replacement UEGO sensor is 30-2001, and you can search for the product page with the “Buy Now” button using the “Search AEM’s Site” box located below the products menu on the vertical navigation bar. Or, click on the “Sensors and Connectors” page using our vertical menu. To purchase from one of our authorized dealers, please visit our Dealer Finder page using the link at the top right of the horizontal menu.
     
    Q:  I have a four-cylinder car. Which AEM Wideband Air/Fuel Controller should I use?
    A:  You can use one of our single-channel wideband air/fuel controller modules (Inline Wideband Air/Fuel Controller, Digital or Analog Wideband Air/Fuel Gauge, Wideband Failsafe Gauge or X-WiFi Wideband Air/Fuel & EGT Controller).

    You can also monitor each cylinder’s individual air/fuel ratio using a 4-Channel Wideband Air/Fuel Controller module. The 4-Channel Wideband Air/Fuel Controller delivers the greatest accuracy and potential for power when tuning air/fuel ratio since it reads AFR in every cylinder chamber individually. If you have a forced induction engine, you can still mount the sensors pre-turbo by including AEM’s Backpressure Compensation Kit (PN 30-2064).

    If you use and Inline Wideband Air/Fuel Controller and want to view your air/fuel ratio in real time, you will need to purchase an AEM air/fuel display gauge (digital or analog style). You can also monitor AFR from your laptop if you have a stand-alone engine management system with this capability.
     
    Q:  I have a V6, V8, V10 or V12 car. Which AEM wideband UEGO Controller should I use?
    A:  You can use two of our single-channel wideband air/fuel controller modules (Inline Wideband Air/Fuel Controller, Digital or Analog Wideband Air/Fuel Gauge, Wideband Failsafe Gauge or X-WiFi Wideband Air/Fuel & EGT Controller) if you want to monitor both cylinder banks.

    You can also monitor each cylinder’s individual air/fuel ratio using multiple 4-Channel Wideband Air/Fuel Controller modules. These Controllers are CAN-enabled which allows you to daisy chain them together when used an AEM Programmable Engine Management System or most other CAN-enabled standalone programmable engine management systems. The 4-Channel Wideband Air/Fuel Controller delivers the greatest accuracy and potential for power when tuning air/fuel ratio since it reads AFR in every cylinder chamber individually. If you have a forced induction engine, you can still mount the sensors pre-turbo by including AEM’s Backpressure Compensation Kit (PN 30-2064).
     
    Q:  Do I still need to run my factory exhaust gas sensor if I have an AEM Wideband Air/Fuel Controller?
    A:  Maybe. If your vehicle’s Engine Management System uses the O2 sensor for fuel control and you cannot recalibrate its sensor signal to work with the wideband air/fuel ratio sensor, then you will need to retain the factory sensor.

    If you are running a factory ECU then you will need to continue to send it the factory narrow-band signal or it will throw a Check Engine Light (CEL).

    Additionally, on emission controlled vehicles in California you MUST retain the entire stock emission system for emissions legality.
     
    Q:  Will my nitrous oxide system damage the wideband air/fuel sensor?
    A:  Nitrous Oxide itself is not in any way harmful to a wideband air/fuel sensor. However, running excessively rich will shorten the sensor’s life and many nitrous systems run in this condition. In this way, nitrous oxide may shorten a wideband air/fuel sensor’s lifespan.
     
    Q:  What is the warranty on AEM electronics?
    A:  Please note that before we can issue a Returned Merchandise Authorization number (RMA) for AEM Electronics products, it is first necessary for the installer or end user to contact our Electronics tech line at 1-800-423-0046 to discuss the problem. Most issues can be solved over the phone. Under no circumstances should a system be returned or RMA requested before the above process transpires.

    Advanced Engine Management Inc. warrants to the consumer that all AEM High Performance products will be free from defects in material and workmanship for a period of twelve (12) months from date of the original purchase. Products that fail within this 12 month warranty period will be repaired or replaced at AEM’s option, when determined by AEM that the product failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of the AEM part. In no event shall this warranty exceed the original purchase price of the AEM part nor shall AEM be responsible for special, incidental or consequential damages or cost incurred due to the failure of this product. Warranty claims to AEM must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12 month warranty period. Improper use or installation, use for racing, accident, abuse, unauthorized repairs or alterations voids this warranty. AEM disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by AEM. Warranty returns will only be accepted by AEM when accompanied by a valid Return Merchandise Authorization (RMA) number. Credit for defective products will be issued pending inspection. Product must be received by AEM within 30 days of the date RMA is issued.

    Do you have more questions about AEM Electronics products?
    Please visit the AEM Electronics forum! Our forum contains detailed technical information for all of our electronics products. Click here to visit the forum!


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