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Spartan 3

by 14Point7
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Common Features of Spartan 3 and Spartan 3 Lite:

  • 10ms Response Time
  • 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
  • 1x High Perf Linear voltage output, 12-bit 8MSPS DAC with 0.1% tolerance voltage reference, that together with the separated grounds makes this linear output very accurate with very low noise. 
  • 1x Stand Perf programmable linear voltage output driven by an RC filtered 8-bit PWM.
  • Supports both the Bosch LSU 4.9 and Bosch LSU ADV sensor. Spartan 3/lite with LSU ADV will prove a 20x increase in lambda resolution versus Spartan 3/lite with LSU 4.9.
  • Lambda range of 0.6[Lambda] to 3.4[Lambda], equivalent to 8.82[AFR] to 50[AFR] for gasoline.
  • Carbon Fiber PETG 3d printed case.
  • 2-year warranty.
  • 60-day money-back guarantee.

 Note: Lambda sensor carries a 3-month warranty

Spartan 3 Specific Features:

  • CAN Bus support for the following ECUs; Megasquirt 3, Adaptronic, Link, Haltech, as well as YourDyno dyno controller are supported. More supported devices coming soon via firmware update.
  • User-assignable 11 bit CAN ids via UART/USB-UART
  • Set/Clear CAN Termination resistor via UART/USB-UART
  • Compatible with Torque OBD for Android to display AFR
  • Onboard FTDI based serial-USB converter.

Spartan 3 Lite Specific Features:

  • UART @ 5v
  • Spartan 3 Lite does not have CAN Bus

Additional Features and Specifications:

  • 8 ft cable length
  • Operating Temperature: -40[C] to +105[C]


  • Spartan 3 Lite without LSU @ $109 USD
  • Spartan 3 Lite with LSU 4.9 @ $159 US
  • Spartan 3 Lite with LSU ADV @ 209 USD
  • Spartan 3 without LSU @ $139 USD
  • Spartan 3 with LSU 4.9 @ $189 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
  • 1x Five Amp fuse holder
  • 2x Five Amp fuse (replacement included)
  • 1x 250ma fuse holder
  • 2x 250ma fuse (replacement included)

Spartan 3 ADV Compatible Products:

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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