Logging Chart Display (Dual Channel Unit)
AFR Data Analysis
AFR (air/fuel ratio) table
display is only possible when both engine RPM and correctly scaled throttle
position sensor (TPS) data has been logged from a fuel injected vehicle. The
table format is intended to match the RPM rows and TPS columns used by many
industry standard engine mapping systems.
figure below shows
AFR Data Display
You can also
display and print out the required fuel correction (in
percent) based on the AFR target value you select. You
can add data from an unlimited number of files that you previously saved. The
data will be analyzed and incorporated into the table. Cells that vary more
than ±0.5 AFR from the command value are shaded blue for rich or red for lean.
Fuel Correction Display
You can use two approaches to make the
required corrections in the your engine mapping software. If you have
Microsoft Office with Excel, you can directly copy and paste data from the WEGO software to an Excel spreadsheet and then copy and paste from the Excel
spreadsheet into the engine mapping software. In the WEGO software, you can
select a range of cells with the mouse and right click to bring up a copy menu.
You can also left click on the upper left legend cell to select the entire table
and then right click to bring up the copy menu. For more details on using Excel,
including sample spreadsheets, please visit the WEGO Tec FAQ.
Alternately, you can manually enter the required corrections in your engine
mapping software by referring to the printed fuel percent correction table and
marking off cells as you edit them.
For more details, please download and read the software instructions.
WEGO Software and Instructions
of the decimal point on the WEGO LED display is set during manufacturing and
cannot be changed. Standard WEGO units
display AFR values with XX.X number format, such as AFR values from 10.3-19.5
for gasoline or 4.5-8.6 for methanol. Special WEGO units are available for
Lambda display with X.XX number format, i.e. Lambda values from
This tech note provides WEGO hookup and setup information for Suzuki®
offer dual channel WEGO IIID units intended for connection to an existing
data acquisition system for dyno test lab or professional racing use. We also
offer WEGO IV single and dual channel units in an aluminum housing suitable for
dyno test lab use. The WEGO IIID units do not include an LED display or any internal data logging capability.
They have a 0-5V analog AFR output. The analog
output is linearly scaled with 0V=10.0 AFR and 5V=20.0 AFR (the useful range is
10.3 to 19.5 AFR) and is compatible with industry standard 0-5V analog inputs on
most data acquisition systems. The WEGO IIID is also used with our TCFI fuel injection controllers.
The WEGO IV series have the same features and capabilities as the WEGO III except that
they are packaged in a very compact aluminum housing and intended for dyno lab
applications. For more information on the entire WEGO series, please visit
the WEGO product pages on the website for our sister company
Dual Channel WEGO IIID
Single Channel Unit
WEGO IV Dual Channel Unit
Dynojet® Dyno Interface
You can easily interface
any of the WEGO systems to a Dynojet® dyno equipped with the Dynojet® analog
module. If you interface the WEGO IIID, you can display and chart two channels
of AFR data along with the other dyno data in the Dynojet® WinPEP® software. For
complete details, please refer to the
Dynojet® Interface Tech Note.
SuperFlow® Dyno Interface Kit
We sell a complete kit intended for easy hookup to a SuperFlow® dyno that was
previously equipped with Innovate® LM-1 wide-band exhaust gas oxygen sensor
interfaces. The kit includes a WEGO IIID dual channel wide-band exhaust gas
oxygen sensor interface, two Bosch LSU 4.2 wide-band sensors, two custom length
sensor extension cables, and power supply. The WEGO IIID is supplied with
connectors that directly plug into the SuperFlow® auxiliary input cable. For
complete details, please refer to the
SuperFlow® Interface Kit Tech Note.
WEGO Dual Channel Unit
our dual channel WEGO and an Edelbrock QwikData„˘ data acquisition system, J&P Cycles®
just set a new national AMA speed record of 179.940 MPH in the 1350cc pushrod
gas class at the 3rd annual Bub®
International Land Speed Trials (September 2006 at the Bonneville Salt Flats
the 2nd AHDRA 2007 Screamin' Eagle National Event at Firebird
International Raceway in Phoenix, Desert Dawg Greg Krenik set a new
AHDRA Pro Modified national record with an 8.815 ET. Greg uses the WEGO to tune his bike in practice and the results speak for themselves.
Jeannie Pflum of Performance Solutions just set a new 1000cc Production
record at the 2010 SCTA World Finals at Bonneville with a 196.476 MPH
pass. Performance Solutions uses the WEGO III for tuning.
units can be used with exhaust sniffers that allow
temporary installation on most motorcycles for tuning and
offers an exhaust sniffer, P/N 777, suitable for use with the WEGO. For
additional information on do-it-yourself sniffers,
refer to our
Exhaust Sniffer Tech Note.
P/N 777 Exhaust
2010 and later H-D® touring
models are equipped with miniature 12mm oxygen sensors. The Bosch LSU 4.2
wide-band oxygen sensors used with the WEGO series are 18mm and will not fit.
Smaller wide-band sensors are not available. However, there is a solution.
Several other companies sell an oxygen sensor manifold
kit that allows easy installation of Bosch LSU
4.2 wide-band sensors on any exhaust system for testing purposes.
The process involves drilling small holes and
using a special tool to install threaded fittings for the sensor manifolds.
After testing, button head stainless steel screws are installed in place of the
sensor manifolds and the heat shields are reinstalled.
Sensors on 2010 Model Using the Installation Kit
Example of a Manifold Oxygen Sensor Installation Kit
Lascar Electronics (www.lascarelectronics.com)
offers a wide variety of inexpensive programmable displays with analog inputs
that are compatible with our WEGO series. The customer can easily program an almost
infinite combination of styles, legends, colors, and ranges using their free
PanelPilot software. Prices start at under $100.00. Several programs for the SGD
28-M display are shown below. This version is also available in an IP67 rated
Lascar SGD 28-M with Dual Bargraph Program
Lascar SGD 28-M with Dual Digital Program
Lascar SGD 28-M with Combo Program Reading in Lambda Units
Dash Mount Displays
Looking for a single or dual channel dash mount display to use with your WEGO
system? VEI Systems sells single and dual channel displays that are compatible
with the 0-5 volt output of our WEGO systems. These displays will read out
directly in AFR units. For more information, visit VEI systems at
When ordering from VEI Systems, ask them to preset the display to read 10.0 AFR
at zero volts and 20.0 AFR at 5.0 volts.
VEI Systems Dual Channel AFR Displays