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Friday, June 3, 2022

Dynojet WBCX Wideband Interface

If monitoring and tuning with Wideband sensors interests you, Dynojet has provided a means to install Wideband O2 sensors to your Indian motorcycles. The basic tuning equations I provide for free do not take advantage of the WBCX if present. Please contact me to discuss my expanded equations that do use the Wideband and Narrowband sensors.

The WideBand CX (WBCX) places wideband data on the CANBus and the PV3 or PVCX picks this data up, displays and logs if recording.  This greatly simplifies the data logging process with widebands.  It is also the way you bring data into Power Core Software Suite if tuning with a Dyno. 

Unfortunately, wideband sensors require 18mm bungs instead of the narrowband 12mm ones.  If you have the Rinehart Slimline Dual's, then you are gold in that it has both 12mm and 18mm bungs installed.  If not, then to use the WBCX, it requires locating and welding 18mm bungs in the exhaust.  (The Victory does not have this problem since their narrowbands are 18mm, you simply replace the narrowband with the widebands.)

This photo shows the location I chose for the front wideband.  Not optimal for sensor longevity, however it is fine for tuning.


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The rear is better and can be seen here toward the floorboard.  The jackpot header eliminates reversion that affected the readings on my original installation using a gutted CAT stock header.


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 The diagnostic cable is plugged into the diagnostic port on the bike.  I routed the cable up to the compartment under the seat.

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The WBCX module is located under the seat.  It is power by the diagnostic port and provides the CANBus link to the PV3 or PVCX.


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I routed the 4-pin to 4-pin through the gas tank's tunnel and up to the front.

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This shows the cable exiting the gas tank.

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My PVCX (and later PV3) is mounted on the handlebars so I can see the data and log easily.  Here is the wideband data (AFR1 & AFR2( displaying on the PVCX screen.


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The wideband data is now available in the Log0x.cxl file that is recorded. If using the PV3, it is in the .WP8 data file. In Power Core Software Suite, this data id now available to plot, view, and use in calculations to correct fueling.