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Spartan 3

by 14Point7
This product is not available

Spartan 3 has been replaced by Spartan 3 v2

Spartan 3 Features:

  • 10ms Response Time
  • 1x Programmable Linear voltage output for Lambda/AFR/%Oxygen
  • 1x Programmable simulated narrowband output
  • Compatible with Bosch LSU 4.9, Bosch LSU ADV, and clone LSU 4.9 sensors. The LSU ADV sensor provides a 20x resolution increase over the LSU 4.9.
  • Lambda range of 0.6[Lambda] to 3.4[Lambda], equivalent to 8.82[AFR] to 50[AFR] for gasoline
  • %O2 range of 0%O2 to 21%O2
  • Lean Burn mode for lean burn applications
  • CAN Bus support for the following ECUs; Megasquirt 3, Adaptronic, Link, Haltech, HP Tuners, as well as YourDyno dyno controller are supported. More supported devices coming soon via firmware update
  • CAN Bus output of Lambda or %O2
  • Smart Heatup; RPM Triggered Heating of the oxygen sensor for MS3 ECU over CAN
  • Smart Heatup; Temperature Triggered Heating, Spartan 3 will wait for the Oxygen sensor to be heated to 350C by engine exhaust gas before heating up the sensor 
  • Does not require Free Air Calibration but FAC is available. Recommended only for clone LSU 4.9 sensors
  • Compatible with Torque OBD for Android to display AFR
  • Onboard FTDI based serial-USB converter
  • ARM Cortex M4
  • 0.1% tolerance components for all components that affect accuracy
  • 4 layer Printed Circuit Board
  • Separate grounds and power connections for LSU Heater and electronics for improved noise performance and improved voltage protection
  • 2-year warranty
  • 60-day money-back guarantee

 Note: Lambda sensor carries a 3-month warranty


Additional Features and Specifications:

  • 8 ft cable length
  • Operating Temperature: -40[C] to +105[C]
  • Spartan 3 dimensions: 115mm x 60mm x 26mm


  • Spartan 3 without LSU @ $139 USD
  • Spartan 3 with LSU 4.9 @ $191.50 USD
  • Spartan 3 with LSU ADV @ 239 USD

If Spartan 3 is ordered with a sensor, Spartan 3 will ship configured for that sensor. If Spartan 3 is purchased without a sensor then Spartan 3 will ship configured for the LSU 4.9, the user can change the sensor settings using a serial terminal. You can also request LSU 4.9 and LSU ADV configuration at the time of ordering using the order notes




Software and Documentation

Package Contents
  • Spartan 3/Lite Lambda Controller
  • 8ft lambda sensor cable
  • 2x fuse holder
  • 2x 5 Amp fuse (replacement included)
  • 2x 1 Amp fuse (replacement included)


Spartan 3/Lite Compatible Products:

Solid AFR Gauge

Premium Oxygen Sensor Bung

Standard Oxygen Sensor Bung


Bosch LSU 4.9

Premade Cable for LSU 4.9 and ADV

5 out of 5, based on 4 reviews
Alan H from Wisconsin on Sep 18, 2016
Simple, stable, easy to install.
Simon J from England UK on May 05, 2016
Used both the Spartan 1 & 2 with good consistent results unlike my previous Innovate LM-2 WBC, both do exactly as intended although I do prefer the neatness of the Spartan 2 over the 1, previously never heard of 14point7 until I read some promising reviews online, glad I did.
Nicholas Chang from Jamaica on Jun 26, 2015
very simple clean looking setup if i didnt already know its a wideband id have never guessed it was anything more than an O2 sensor with a long wire harness

installation was pretty easy its literally just running a wire !!!! also recommend you purchase the gauge to go with this as it looks great
Nicholas M Chang from United States on Apr 09, 2015
seller communication was a little slow but he was always helpful and answered questions even help sort out a little mixup with no hassle

item arrived sensor seems to have been a new but pretested before sent out to prevent errors i do appreciate the quality control there

item was much smaller than i anticipated and seems to be easier to hide away its basically a long cable u can cut to length

added bonus was that it emulates narrowband signal for stock computer so u can have wideband without putting a bunch of holes in ur system :)

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