AEM Flex Fuel Wideband Failsafe Gauge Includes FF Sensor 304911 User Manual

AEM Performance Electronics 2205 126th Street Unit A, Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aemelectronics.com Instruction Part Number: 10-4910 Rev B  2016 AEM Performance Electronics 
 
 
 
 
Instruction Manual 
P/N 30-4910 Wideband Ethanol Boost Gauge 
P/N 30-4911 Wideband Ethanol Boost Gauge 
 
This product is legal in California for racing vehicles only and should never be used on public highways. 
 
 
Wideband Ethanol Boost Gauge Parts List 
 
WARNING: 
! 
This...

Page 3 
GETTING STARTED 
 
THIS PRODUCT DOES NOT INCLUDE SOFTWARE IN THE PACKAGING. PLEASE DOWNLOAD AND INSTALL THE 
WIDEBAND ETHANOL BOOST CONFIGURATION SOFTWARE FROM THE AEM WEBSITE AT: 
www.aemelectronics.com/downloads 
 
Software Installation Instructions 
 
Follow the Installation Instructions as outlined in the forum 
post described above.  After the software installation is 
complete, double-click on the AEM W ideband Ethanol 
Boost icon (shown below) to launch the application. 
 
Connect the USB...

Page 4 
ECU / Datalogger 
Installation Diagram 
  
Installation 
 
1. Disconnect the negative battery cable. 
 
2. Temporarily install gauge without bracket into desired mounting location.  Gauge mounts into a 2-1/16” (52MM) hole.  
The supplied rubber band can be used as a spacer around the gauge if it fits loosely in mounting hole. 
 
3. Locate a suitable place in the exhaust system to install the included oxygen sensor weld bung. On non-turbocharged 
engines, mount the oxygen sensor in the exhaust...

Page 5 
 
4. Next, the UEGO sensor 8-pin wiring harness should be routed to the oxygen sensor bung.  
 
 
Pin Color Description 
1 N/C N/C 
2 White Heat - 
3 Orange VM 
4 Green IA 
5 Red IP 
6 Black UN 
7 N/C N/C 
8 Brown 12V  
 
 
5. Next the main 16-pin connector will be manually wired into the vehicle. 
 
Pin Color Description 
1 Black Ground; connect to good chassis ground or directly to battery negative (−) terminal 
2 Red Ignition power; connect to a fused key on +12V power source 
3 Black USB -...

Page 6 
6. Connect the pre-terminated brown three pin connector to the flex fuel ethanol content sensor, if present. 
Pin Color Description 
1 Red Vcc – Battery 12V 
2 Black GND – Battery Ground 
3 Green Vout – Sensor Output (10k pullup to pin 1)  
  
 
7. Connect all cables and wiring harnesses to gauge.  Fully install gauge into hole using mounting bracket and nuts. 
 
8. Install USB cable so the PC end of the cable is easily accessible and route the gauge end of cable to the gauge 
mounting location....

Page 7 
Wideband Ethanol Boost Configuration 
 
In this tab, the AFR monitoring and alarm output functionality of the W ideband Ethanol Boost can be configured.   
 
 
 
 
 
 
 
Air to Fuel Ratio vs. Pressure 
Description 
Displays AFR vs. Pressure data points. AFR points will be populated live whenever the PC is connected to the Wideband Ethanol Boost 
and the UEGO sensor is registering an input. The current AFR and Pressure values are shown live on the right side of the graph.  The 
graph area  is...

Page 8 
 
 
 
Gauge Configuration 
 
In this tab, the gauge lighting and display features can be configured. 
 
 
 
Alarm Configuration 
Option Description 
Alarm Delay  Period of time that measured AFR can be outside the upper and lower AFR limit lines before an alarm 
condition is triggered; 100-1000 milliseconds 
Alarm Reset Period of time AFR must be within the acceptable range before the alarm will automatically reset and turn 
OFF; 1-10 seconds 
Disable Auto Reset Select to require power cycle to...

Page 9 
 
 
 
 
Wideband Ethanol Boost Failsafe Tuning 
 
The following is a basic guideline strategy for configuring the Wideband Failsafe for the first time.  The ideal time to 
configure the Wideband Ethanol Boost is while the vehicle is being dyno tuned.  Ensure your engine is fully functional 
mechanically before starting to configure the Wideband Failsafe!    
 
1. In the W ideband Ethanol Boost Configuration tab, click Clear Graph and Reset Limits to zero all settings. 
 
2. If a boosted pressure...

Page 10 
 
 
3. Run the engine as you would normally drive the vehicle then complete a series of long sweeping high load 3rd and 4th 
gear pulls going from low to high RPM each time to populate the graph with AFR data.  Avoid making quick hard pulls 
as this may skew the AFR data points. Repeat this procedure until a baseline AFR curve is established. Note: You 
may notice that a few random AFR data points are plotted well outside of the normal AFR curve. This is caused by 
dynamic tip-in wall wetting in...

Page 11 
 
  
 
5. Test the configuration using your anticipated normal operating conditions with varying engine speed and engine load 
situations to account for starting, stopping, accelerating, high boost, low boost, tip in, fast shifts, slow shifts, etc. If 
false triggers occur, either adjust the high or low AFR curve up or down at the pressure breakpoint where the alarm 
occurred or adjust the Alarm Delay setting.  
 
NOTE: There are two general configuration strategies to follow when using the W...