Tuning · AFR monitoring
Tachofi Wideband AFR Gauge
A 52mm wideband UEGO air/fuel gauge with integrated Bosch LSU 4.9 controller — accurate to 0.1 AFR, no laptop required.
$247
AUD · incl. GST
- 52mm (2-1/16") wideband UEGO gauge — fits standard gauge pods or remote mount
- 24 colour-coded LED sweep with three-digit AFR / Lambda centre readout
- Bosch LSU 4.9 sensor and weld-in bung included — accurate to 0.1 AFR
- AFR or Lambda switchable from the back of the gauge
- 0–5V analog output (programmable) and RS-232 serial for ECU & dataloggers
- No laptop required — ideal for EFI, carb and dyno tuning
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About this gauge
The Tachofi Wideband AFR Gauge combines a single-channel Bosch UEGO controller and a 52mm (2-1/16") gauge head into one unit, so you can see real-time air/fuel ratio without dragging a laptop into the car. Twenty-four colour-coded LEDs sweep around the dial as the mixture moves from rich to lean, with a three-digit centre readout showing AFR (or Lambda — switchable from the rear of the housing) live as you drive. Accuracy is rated to 0.1 AFR, fast enough to trust on the dyno and on boost, and ideal for both EFI and carburetted engines. A user-programmable 0–5V analog output and RS-232 serial stream let it feed straight into ECUs and dataloggers. Every kit ships with the Bosch LSU 4.9 sensor, weld-in bung and full looms — engineered alongside our cluster restoration work, with the same focus on legibility and a clean install.
In the box
- 1 × Tachofi 52mm wideband AFR gauge head (with integrated controller)
- 1 × Bosch LSU 4.9 wideband oxygen sensor
- 2 × Wire harnesses (sensor & power / IO)
- 1 × Oxygen sensor connector
- 1 × Weld-in bung
- 4 × Heat-shrink butt connectors
- 1 × Decal / apron set and installation instructions
