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Ballenger Motorsports AFR500v2 Manual Rev 1.4a                  - 1 - 
 

 

Ballenger Motorsports, Inc. 
8052 Elm Drive, Ste G 
Mechanicsville, VA 23111 

Phone: (804) 915-7201 

 

Fax: (804) 433-3825 

www.bmotorsports.com

 

 
 
 

AFR500v2 Tuning Manual 

 
 

 

 

 
Ballenger Motorsports AFR500v2 Manual Rev 1.4a                  - 2 - 
 

1. Critical Product Notes 

 
• Do calibrate your AFR500v2 in free air before first use! 
• When powered, the oxygen sensor becomes very hot and will stay 
very hot for some time after use.  Take caution with this heated sensor 
to avoid burns or ignition of flammable substances. 
• Do not leave the sensor in the exhaust stream while disconnected 
from the controller or unpowered.  This will foul an oxygen sensor 
rapidly. 
• Do take extreme care when changing internal option jumpers in 
AFR500v2 controller. 
• Do not apply excessive voltage (more than 28V DC) to the harness.  
• Do not allow the sensor to be dropped or be handled roughly; the 
delicate ceramic internals may be damaged by mishandling. 
• Do not modify the wiring harness. 
• Do not run the wiring harness near hot or sharp objects.  A short in 
this harness could result in a fire.   
• Do not use the wiring harness if it is damaged. Replace it.  
• Do not expose the AFR500v2 to open weather conditions or water 
as the enclosure is not fully sealed (contact us about sealing). 
• Do not open or modify the oxygen sensor. 
 

Please read this manual fully to understand the proper use

 of the 

AFR500v2.  Misuse, mishandling and a lack of understanding may 
cause premature failure or inaccurate readings.  We do not take 
responsibility for and cannot warranty the AFR500v2 kit in cases of 
improper use or improper applications. 
 
Ballenger Motorsports does not accept any responsibility for incurred 
damage as a result of using the AFR500v2. 

Summary of Contents for AFR500v2

Page 1: ... apply excessive voltage more than 28V DC to the harness Do not allow the sensor to be dropped or be handled roughly the delicate ceramic internals may be damaged by mishandling Do not modify the wiring harness Do not run the wiring harness near hot or sharp objects A short in this harness could result in a fire Do not use the wiring harness if it is damaged Replace it Do not expose the AFR500v2 t...

Page 2: ...v 1 4a 4 Lambda Methanol AFR display options Extreme Range option for FI methanol laboratory applications 0 411 1 373 Lambda 6 20 Gas AFR 2 66 8 88 Methanol AFR Increased display speed Bosch LSU 4 9 option Faster analog output All harnesses control units accessories etc except the LSU 4 9 are backwards and forwards compatible Options are selectable at any time via internal jumpers NTK Calibration ...

Page 3: ... ground is connected to a tuning device ECU or logger the main ground should be connected to the battery or chassis Any Ballenger Motorsports AFR500v2 Manual Rev 1 4a 6 extensions of the main ground should be 14AWG or larger with a high quality butt connection with both AFR500v2 main ground wires and a properly validated crimp joint Avoid high temperature high vibration sharp objects and ignition ...

Page 4: ...ethanol AFR Today s fuels are increasingly complex with mixes and exotic fuel types Some customers are specifically familiar with methanol AFR rather than gasoline AFR We ve added lambda as it handles fuel based variations and is a better option than gasoline AFR for most modern fuels Methanol is exclusively for use with race alcohol methanol fuel You must install a red jumper to enable lambda or ...

Page 5: ...play 3 Jumpered 4 No Jumper Methanol AFR Display 3 No Jumper 4 Jumpered Lambda Display 3 Jumpered 4 Jumpered No Function 9 Display of Configuration Options Check Settings When power is applied the AFR500v2 will display your configuration options The first two digits on display during boot indicate Sensor configuration 4 2 Indicates LSU 4 2 NTK Sensors 4 9 Indicates LSU 4 9 only The third digit of ...

Page 6: ...eally the sensor is installed off vertical between the 10 and 2 clock positions see Fig 4 The electrical connector should be installed to maximize strain relief at the sensor and connector to keep the connector clean and free of contaminants and to keep the plastic connector away from excessive heat Ballenger Motorsports AFR500v2 Manual Rev 1 4a 12 Fig 4 Minimum installation angle above horizontal...

Page 7: ... 1 244 Lambda 411 1 373 0 411 Vout x 0 1923 Ballenger Motorsports AFR500v2 Manual Rev 1 4a 14 It is important to observe any analog offsets Any analog input in a logging system may suffer from a voltage offset requiring that you always check your analog values against a known reference In the case of the AFR500v2 there is a special provision for this During startup the AFR500v2 will output 1 volt ...

Page 8: ... 7 Wiring is improperly populated crossed send customer images and make sure to tell them to validate direction using keyways 8 Bad ground connection to the controller or bad power connection The voltage should be a DC supply voltage between 11 and 28 volts If the voltage drops below 11 it will reset itself sometimes this happens during cranking We have seen bad wiring contribute to sensor problem...

Page 9: ...ade NTK Sensor request for AFR500 SNSR 01061 Steel oxygen sensor boss bung SNSR 01062 Steel oxygen sensor plug screw SNSR 01051 Stainless Steel oxygen sensor boss bung SNSR 01052 Stainless Steel oxygen sensor plug screw TOOL 07557 High temperature mounting Velcro hook TOOL 07558 High temperature mounting Velcro loop TOOL 06736 AFR500 Cigarette Lighter fused power CONN 100111 AFR500 Deutsch 8 way c...

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