Overview

Racepak AF4 Series Air Fuel Ratio Harnesses

Racepak AF4 Series air/fuel ratio harnesses are dedicated wiring cables used to connect specific Racepak wideband oxygen sensors to Racepak AF4-series A/F controllers and data loggers. They provide precise air/fuel data acquisition for racing engines, supporting both gasoline and methanol setups. These harnesses and controllers are integral to professional motorsports, translating real-time exhaust oxygen levels into readable telemetry. The cables are available separately to connect to the "A" and "B" sides.

Key features:

* Connectivity: The harnesses are split into "A Side" and "B Side" connections, which attach the AF4 controller to AMP air/fuel sensors
* Vehicle Layouts: Because race cars feature different exhaust configurations, controllers and harnesses are specifically ordered by cylinder bank layout (i.e., 1-2-3-4 cylinder or 5-6-7-8 cylinder layouts).
* Fuel Types: They are calibrated to display accurate ratios for either gasoline (9.55:1 to 20:1) or methanol (4.22:1 to 8.7:1)
* Fixed Dimensions: To prevent electrical signal degradation, the pigtail lengths (typically 13 in. for the sensor and 37 in. for the controller-to-sensor cable) cannot be altered

Applications

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