AEM Electronics 30-2056 12-Position Potentiometer (Universal) – Boost and Fuel Map Control for Standalone ECUs

The AEM Electronics 30-2056 is a 12-position potentiometer designed to control key engine parameters from the cabin. Compatible with most standalone ECUs (AEM EMS, Haltech, Link ECU, MoTeC, MaxxECU…), it lets you switch boost maps, fuel mixture or ignition timing without a laptop. Ideal for anyone seeking on-track or street versatility with a single click.

Features

• 12 positions with mechanical detent — Each step locks in place and won't shift from vibration, ensuring consistent 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 standard analog signal.
• Customization kit included — Comes with position labels and AEM logo decals in red, blue and black to match your dashboard.
• 30 cm cable — Sufficient length for driver-side mounting; extendable if needed.

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°
• Cable length: 30 cm
• Mounting: 3/8" hole with 1/2" hex nut

Compatibility

Being universal, it works with any ECU featuring 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, fuel maps, variable ignition timing, traction or launch control adjustments.
• Vehicles: any car with aftermarket engine management, 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 position drift from engine vibration. Each detent generates a precise, repeatable voltage, resulting in reliable map changes without signal wandering. The sealed body also withstands race cockpit conditions.

FAQ

• Can I control traction control with this dial? Yes, if your ECU allows traction level adjustment via analog input.
• What's included in the package? The potentiometer with cable, two position labels for the dial and sets of AEM logo decals in various colors.
• Is it difficult to install? Requires three-wire connection (5V, ground and signal), standard procedure for any aftermarket ECU installation.

Shipping & warranty

In stock. Fast shipping across Spain. Compatibility guaranteed with ECUs accepting 0-5V analog input. Ideal for anyone wanting full engine control at their fingertips.