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O2 Shifter Controller

Exhaust Gas Oxygen Signal Modifier & Fuel Economy Optimizer
Product Manual Inquire Pricing
O2 Shifter Controller Device
O2 Signal Shifter Dial Unit

Zirconia Oxygen Signal Interceptor

The O2 Shifter intercepts signals from standard Zirconia oxygen sensors and modifies closed-loop feedback sent to the vehicle ECU, allowing instant dial adjustments between fuel economy and launch driveability.

Up to 8% Fuel Savings in Economy Mode
AFR Adjustment
14.2 to 15.3
Fuel Trim Range
Up to 15%
Sensor Type
Zirconia O2
Option
Bluetooth Available

Closed-Loop O2 Signal Modification

In standard closed-loop operation, the vehicle ECU monitors the O2 sensor (0.1V lean to 1.0V rich) and continuously trims fueling to keep the Air-Fuel Ratio (AFR) near stoichiometric (~14.7:1).

The O2 Shifter shifts or delays the lean/rich voltage switching transitions. This causes the factory ECU to perceive the engine as slightly leaner or richer than it actually is, automatically adjusting fuel delivery accordingly.

Single Control Knob Operation:
  • Center Detent: Stock factory operation (No shift).
  • Lean Shift: Trims fuel consumption by 7-8% for highway cruising economy.
  • Rich Shift: Enriches AFR for smoother acceleration, reduced engine knock, and better launch torque.

Documentation Downloads

O2 Shifter Product & Installation Manual

Wiring harness diagram, calibration instructions, and operating procedures (PDF format)

Download PDF

1-Year Limited Manufacturer Warranty

Focus Applied Technologies warrants all products against manufacturer defects in materials or workmanship for a period of 1 year from delivery date.

  • Covers defect repair or component replacement under normal operating conditions.
  • Excludes damage from improper installation, unauthorized modifications, electrostatic discharge, or natural disasters.

Inquire / Order Unit

Available with OEM connector plug-and-play harnesses and Bluetooth connectivity.

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