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OBDII to iPhone / iPad / iPod Touch / PC
Sensor Module Interface
Green Driving Learning Tool
Standalone MPG Scan Tool
2 1/16" (52mm) Basic Touch Screen
2 1/16" (52mm) Color Gauge
Wideband with Fuel Select
Wideband UEGO Controller
30PSI, 3 Bar Manifold Pressure
K-Type T.C. EGT Controller
Oil Pressure Sender
Water and Oil Temperature Sensor Controller
K-Type T.C. AIT Controller
USB Data Logging Interface
For DM-6, DM-100
For DM-6, DM-100
For DM-200
4 Button Replacement
Power, USB, 2.1mm Cable
Required for Gen1 Sensor Modules
Bosch Wideband LSU 4.2
SM-AFR to O2 Sensor Cable
M18 x 1.5mm Pitch
M18 x 1.5mm Pitch
Swivel Mount with Adhesive
K-Type 1/8 NPT" Sensor
K-Type 1/8 NPT" Sensor
VDO Sensor, Wires Connectors
VDO Sensor, Wires Connectors
Power, 2.1mm Wires and Terminals
2 1/16" (52mm) Color Gauge
60mm (2 3/8") Color Gauge
Single USB Output
Gen2 Dual USB Output
Wideband AFR and OBD II Gauge Combo
OBDII to Android / PC / Linux / Symbian / N9
OBDII to Android / PC / Linux / Symbian / N9
Wideband AFR Gauge Combo with Health Monitoring
710 Lumen Digital Focus
USB Multi Meter
Water Resistant Carrying Case
Water Resistant Carrying Case
Male USB to Micro Male USB Cable
Paul Lowchareonkul Xtreme Devices
M-300 Tuner Edition Gen 4
M-300 Tuner Edition Gen 4
M-300 Tuner Edition Gen 4
For more product information, please click on the tabs below.
The M-300 Tuner Edition measures wideband air fuel ratio and comes with a Bosch LSU 4.9 wideband o2 sensor. It includes all the same features as the SM-AFR wideband controller (UEGO) with a built-in fuel select knob and 4 digit digital display. It's design for the tuner in mind and can be transported from vehicle to vehicle easily. The wideband controller (M-300TE) works with gasoline, biodiesel, 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 and an aluminum enclosure for durability and reliability.
  • 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
  • Tuner Features:
  • Rugged Aluminum
  • No calibration required
  • Soft start technology
  • 2 analog outputs
  • 1 digital input, 1 digital output
  • Bosch LSU 4.9 Sensor
  • Fuel select knob
Product reviews are currently unavailable.
  • Technical Specifications
  • Wideband Output
  • Narrowband Output
  • Included Items
Physical Dimensions: 4 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: 0.68 - 1.36 lambda
10 - 20 AFR (Gasoline 14.7)
9.93 - 19.86 AFR (Diesel 14.6)
4.35 - 8.7 AFR (Methanol 6.4)
6.12 - 12.24 AFR (Ethanol 9.0)
10.54 - 21.08 AFR (LPG 15.5)
11.7 - 23.39 AFR (CNG 17.2)
6.64 - 13.27 AFR (E85 9.76)
Outputs: Digital iMFD Daisy Chain Serial
Analog Wideband Linear 0-5V (Driving Current 20mA)
Analog 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 6 wire Bosch LSU 4.9
Enclosure: Extruded Aluminum
Human Interface: Fuel Select knob
Display 4 Digit LED
Wideband 0-5V analog linear output
Wideband 0-5v Analog Linear Output Graph
Wideband 0-5v Analog Linear Output Graph
Narrowband (Gasoline) 0-1V analog output
  • M-300 TE main unit
  • Bosch LSU 4.9 wideband sensor
  • O2 sensor harness 10ft
  • Adhesive mount
  • 4ft power wire with 2.1mm connector
  • 4ft Analog wires and connector with 4 terminals
  • 1ft Serial Cable
  • Termination jumper
  • User Manual
  • *O2 Bung and Cap Sold Separately