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We're proud to introduce our next generation wideband oxygen sensor controller with intelligent health monitoring technology and current for improved sensor performance. Our new Gen4 Wideband AFR utilizes the next generation in Bosch Wideband Air/Fuel Ratio sensor technology. The Gen4 is faster, more accurate, more durable, and uses less power than the Gen3. The Gen4 also employs the innovative PLX Devices new intelligent health monitoring technology where the oxygen sensor is meticulously monitored every 2mS (488 times per second) to obtain peak performance, accuracy and reaction time. Pair the SM/AFR with the updated patented DM-6 touch screen MultiGauge, battery voltage is displayed from 9V-20V, sensor life is displayed from 0-100%. The oxygen sensor reaction time is displayed from 10mS/1000mS on the brilliant high contrast OLED display.
The PLX Wideband AFR (UEGO) combines an accurate, fast response wideband AFR (Air Fuel Ratio) controller with a Bosch LSU4.9 wideband oxygen sensor. The wideband controller (SM-AFR) works with gasoline, bio diesel, ethanol, methanol, E85, LPG, and CNG. It includes two analog outputs (wideband 0-5V, and narrowband 0-1V) for interfacing with 3rd party devices and one digital serial output for interfacing with the DM-6 gauge and other Multi Gauges. The wideband analog output is ideal for interfacing with aftermarket ECU's and data loggers. The narrowband output is ideal for stock narrowband oxygen sensor replacement where the simulated narrowband analog output is fed back into your ECU to make it operate as if the stock narrowband oxygen sensor is still installed while running the PLX wideband setup. All three outputs can be used simultaneously. Additional features include advanced soft start technology which prolongs the oxygen sensor's life.
*Due to continuous product improvements, actual product may differ slightly from photos/videos.
DownloadSM-AFR User Guide 1) 12V power input 2) 4 prong analog clip 3) Termination jumper 4) Serial RX Plug (In) 5) Serial TX Plug (Out) 6) Sensor Input Clip Physical Dimensions: 2 x 2.875 x 1.125" (52 x 75 x 28mm) L x W x H Technology: PLX Critical Response Technology, Fast Response PID Accuracy: < 0.1AFR (Gasoline) Wideband, < 0.2AFR (Gasoline) Narrowband Measurement Range: 10-20 AFR (Gasoline), 0.68 - 1.36 lambda (Gasoline), 0 - 100 O2 Sensor Health, 0 - 1000 mS Reaction Time, 9 - 20 Volts
Analog Outputs: Wideband Linear 0-5V, Narrowband 0-1V (Driving Current 20mA)
Operating Voltage: 9V-20V Power Consumption: 20 Watts (Max), 13 Watts (Typical) Power Supply Technology: High Efficiency Switching with Soft Start Technology Operating Temperature: 0 - 85 Deg Celsius Sensor: One Bosch LSU 4.9 Enclosure: Automotive Grade Plastic        
iMFD Sensor Table:
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Sensor
|
Address
|
Units
|
Min
|
Max
|
|
Wideband O2
|
0
|
0 - Lambda
|
0.68
|
1.36
|
|
|
|
1 - Gasoline (14.7)
|
10
|
20
|
|
|
|
2 - Diesel (14.6)
|
9.93
|
19.86
|
|
|
|
3 - Methanol (6.4)
|
4.35
|
8.7
|
|
|
|
4 - Ethanol (9.0)
|
6.12
|
12.24
|
|
|
|
5 - LPG (15.5)
|
10.54
|
21.08
|
|
|
|
6 - CNG (17.2)
|
11.7
|
23.39
|
|
|
|
7 - E85 (9.76)
|
6.64
|
13.27
|
|
|
|
|
|
|
|
Exhaust Gas Temp
|
1
|
0 - Celsius
|
0
|
1023
|
|
|
|
1 - Fahrenheit
|
32
|
1873
|
|
|
|
|
|
|
|
Fluid Temp
|
2
|
0 - Celsius Water
|
0
|
150
|
|
|
|
1 - Fahrenheit Water
|
32
|
302
|
|
|
|
2 - Celsius Oil
|
0
|
150
|
|
|
|
3 - Fahrenheit Oil
|
32
|
302
|
|
|
|
|
|
|
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Vacuum
|
3
|
0 - Vac in/Hg
|
29.93
|
0
|
|
|
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1 - Vac mm/Hg
|
760
|
0
|
|
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|
|
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Boost
|
4
|
2 - Boost 0-30 PSI
|
0
|
30
|
|
|
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3 - Boost 0-2 kg/cm
2
|
0
|
2.07
|
|
|
|
4 - Boost 0-15 PSI
|
0
|
15
|
|
|
|
5 - Boost 0-1 kg/cm
2
|
0
|
1.12
|
|
|
|
|
|
|
|
Air Intake Temp
|
5
|
0 - Celsius
|
0
|
150
|
|
|
|
1 - Fahrenheit
|
32
|
302
|
|
|
|
|
|
|
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RPM
|
6
|
0 - 8k
|
0
|
8000
|
|
|
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1 - 12k
|
0
|
12000
|
|
|
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2 - 20k
|
0
|
20000
|
|
|
|
|
|
|
|
Speed
|
7
|
0 - MPH
|
0
|
160
|
|
|
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1 - km/H
|
0
|
258
|
|
|
|
|
|
|
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Throttle Position
|
8
|
0 - Percent
|
0
|
100
|
|
|
|
|
|
|
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Engine Load
|
9
|
0 - Percent
|
0
|
100
|
|
|
|
|
|
|
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Fluid Pressure
|
10
|
0 - PSI Fuel
|
0
|
120
|
|
|
|
1 - kg/cm
2 Fuel
|
0
|
8.44
|
|
|
|
2 - Bar Fuel
|
0
|
8.27
|
|
|
|
3 - PSI Oil
|
0
|
120
|
|
|
|
4 - kg/cm
2 Oil
|
0
|
8.44
|
|
|
|
5 - Bar Oil
|
0
|
8.27
|
|
|
Sensor
|
Address
|
Units
|
Min
|
Max
|
|
Timing
|
11
|
0 - Degree
|
-64
|
64
|
|
|
|
|
|
|
|
Manifold Absolute
|
12
|
0 - kPa
|
0
|
255
|
|
Pressure (MAP)
|
|
1 - inHg
|
0
|
75.3
|
|
|
|
|
|
|
|
Mass Air Flow (MAF)
|
13
|
0 - g/s
|
0
|
655.35
|
|
|
|
1 - lb/min
|
0
|
86.69
|
|
|
|
|
|
|
|
Short Term Fuel Trim
|
14
|
0 - Percent
|
-100
|
100
|
|
|
|
|
|
|
|
Long Term Fuel Trim
|
15
|
0 - Percent
|
-100
|
100
|
|
|
|
|
|
|
|
Narrowband O2
|
16
|
0 - Percent
|
0
|
100
|
|
|
|
1 - Volts
|
0
|
1.275
|
|
|
|
|
|
|
|
Fuel Level
|
17
|
0 - Percent
|
0
|
100
|
|
|
|
|
|
|
|
Volt Meter
|
18
|
0 - Volts
|
0
|
20
|
|
|
|
|
|
|
|
Knock
|
19
|
0 - Volts
|
0
|
5
|
|
|
|
|
|
|
|
Duty Cycle
|
20
|
0 - Positive
|
0
|
100
|
|
|
|
1 - Negative
|
0
|
100
|
|
|
|
|
|
|
|
Fuel Efficiency
|
21
|
0 - MPG
|
0
|
100
|
|
|
|
1 - KM/L
|
0.43
|
42.51
|
|
|
|
2 - L=100KM
|
|
|
|
|
|
|
|
|
|
Analog Voltage
|
22
|
0 - Volts
|
0
|
5
|
|
|
|
|
|
|
|
Speed (Hertz)
|
23
|
0 - Hz
|
0
|
10,230
|
|
|
|
|
|
|
|
Wideband AFR Status
|
24
|
0 - Heating, Ready
|
0
|
1
|
|
|
|
|
|
|
|
Wideband AFR Health
|
25
|
0 - Percent
|
0
|
101
|
|
|
|
|
|
|
|
Wideband AFR Reaction
|
26
|
0 - ms
|
0
|
999
|
|
|
|
|
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Features
New Sensor: Bosch LSU 4.9
New Sensor: O2 Sensor Health
New Sensor: O2 Sensor Reaction Time
New Sensor: Voltage
No Calibration required
Soft start technology
2 analog outputs
1 digital input, 1 digital output
Compatible with multiple fuels
Sensor is hand tested
Digital precision
New on Gen4:
More accurate
Uses only 7.5Watts compared to 10Watts
Faster response time
Improved sensor durability
Faster warm up time
Maintains accuracy throughout life
Less susceptible to contamination
10+ years of average service life
Included Items:
SM-AFR main unit
Bosch LSU 4.9 wideband sensor
O2 sensor harness 10ft
Sensor Module Connect Kit (4ft power wire with 2.1mm connector, 4ft Analog wires and connector with 4 terminals, 1ft Serial Cable, 4 Pin connector for SM-AFR connectivity, 2 Terminals for 4 pin Connector)
Termination jumper
User Manual
*O2 Bung and Cap Sold Separately
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