AEM Electronics 30-2056 12-Position Potentiometer (Universal) – Boost and Mixture Control for Programmable ECUs

The AEM Electronics 30-2056 is a 12-position potentiometer designed to control key engine parameters from the cabin. Compatible with most programmable ECUs (AEM EMS, Haltech, Link ECU, MoTeC, MaxxECU…), it allows you to change boost maps, fuel mixture, or ignition timing with no need for a laptop. Ideal for those seeking versatility on the track or street with a single click.

Features

• 12 positions with mechanical detent — Each step stays fixed and does not move from vibrations, guaranteeing constant precision.
• Sealed body — Resistant to moisture and dust; perfect for cockpit or under-hood installations.
• 0-5V analog input — Compatible with any ECU that accepts a standard analog signal.
• Customization kit included — Comes with position labels and AEM logo stickers in red, blue, and black to adapt the dial to your dashboard.
• 30 cm cable — Sufficient length for mounting near the driver; extendable if necessary.

Technical specifications

• Total resistance: 14.3 kΩ
• Number of steps: 12 positions
• Supply voltage: 5V DC
• Life cycle: minimum 10,000 rotations
• Rotation angle: 330°
• Wiring length: 30 cm
• Mounting: 3/8" hole with 1/2" hex nut

Compatibility

Being universal, it works with any ECU that has an analog input:

• Compatible ECUs: AEM EMS (Series 2, Infinity), Haltech, Link ECU, MoTeC, MaxxECU, and others with 0-5V analog inputs.
• Typical applications: progressive boost control, mixture maps, variable ignition timing, traction adjustments, or launch control.
• Vehicles: any car with aftermarket engine management, whether turbo or naturally aspirated.

References and equivalents

• AEM: 30-2056
• Generic equivalents: 12-step map selectors, multi-position switch for ECU

Why choose the AEM 30-2056?

Unlike generic potentiometers, this model incorporates real mechanical steps that prevent the position from shifting with engine vibrations. Each detent generates a precise, repeatable voltage, which translates into reliable map changes with no signal drift. In addition, the sealed body withstands the conditions of a competition cabin.

Frequently asked questions

• Can I control traction control with this dial? Yes, if your ECU allows adjusting traction levels via an analog input.
• What is included in the package? The potentiometer with cable, two position labels for the dial, and sets of AEM logo stickers in various colors.
• Is it complicated to install? It requires connecting three wires (5V, ground, and signal), a standard procedure in any aftermarket ECU installation.

Shipping and warranty

In stock. Fast shipping nationwide. Compatibility guarantee with ECUs that accept a 0-5V analog input. Ideal for those who want full engine control at their fingertips.