Wideband O2 Controller Comparison

Product	Price	Display	Connectivity	Key Features
SLC Free 2	$45 w/o sensor, $97.50 w/ LSU 4.9	Yes	Linear, Narrowband	Lowest cost, easy to build and install, reliable, LCD display.
Spartan 3 Lite v2	$82.50 w/o sensor, $135 w/ LSU 4.9, $209 w/ LSU ADV	None	Linear, Narrowband, UART 5v	Best in class response time, accuracy, and resolution. Interfaces through analog output.
Spartan 3	$139 w/o sensor, $191.50 w/ LSU 4.9, $239 w/ LSU ADV	Torque Pro for Android	Linear, Narrowband, CAN, USB	All the features of Spartan 3 Lite plus USB and CAN Bus.

 

SLC Free 2 is cheap and reliable, it is part of our 2nd generation of wideband controllers first released in 2009. If you can solder and construct your own cables then SLC Free 2 is an unbeatable value at $45 and it includes a display.

Spartan 3 and Spartan 3 Lite v2 is our 3rd generation of wideband controllers first released in 2019.

Spartan 3 Lite v2 is a great value wideband controller with exceptional performance, accuracy, reliability, and ease of installation. If you do not know what you need then Spartan 3 Lite v2 is likely the best choice.

Spartan 3 offers everything Spartan 3 Lite v2 offers plus CAN Bus. 

Spartan 3/Lite is compatible with both the Bosch LSU 4.9 and the Bosch LSU ADV.

Spartan 3/lite with the ADV sensor offers a 15% increase in accuracy and a 20x increase in resolution versus Spartan 3/lite with a LSU 4.9 sensor. The 20x increase in resolution is unique to Spartan 3/lite, all other wideband controllers that use the ADV sensor offer no resolution advantage over the LSU 4.9.