When it comes to tuning, not all dynos are created equal, and the AWD Eddy Current Dynamometer sets itself apart.

Unlike simple inertia dynos (which only measure power as the vehicle accelerates a heavy roller), our Eddy Current dyno allows us to simulate real-world driving loads with incredible precision. 

How It Works

An Eddy Current Dyno uses electromagnetic resistance rather than just roller inertia. Each roller is connected to a power absorption unit (PAU), essentially a large, precisely controlled electric brake.

Inside each PAU is a rotor that spins between electromagnetic coils. When we energize those coils, they create a magnetic field that resists the motion of the rotor.

• The stronger the magnetic field, the greater the resistance.
• The dyno’s control system constantly adjusts this resistance in real time, simulating uphill loads, gear pulls, or even steady-state cruising.

The system uses load cells and speed sensors to measure the torque being absorbed by each roller. That torque, multiplied by rotational speed, gives us horsepower at the wheels in real time.

Power & Control

The “Eddy” in Eddy Current comes from the swirling electrical currents created in the metal rotor as it passes through a magnetic field, and these currents produce resistance.

Our AWD Eddy Current Dyno features two synchronized rollers, front and rear, each with its own PAU. They’re electronically linked, allowing us to tune true all-wheel-drive systems, from BMW xDrive and Audi Quattro to Porsche AWD.

Because the dyno uses electromagnetic braking, it can hold the car at specific RPM or load points indefinitely. That’s what makes it perfect for steady-state tuning, air/fuel calibration, and R&D testing, something an inertia dyno simply can’t do.

Real-World Simulation

By controlling the electromagnetic resistance, we can replicate real driving conditions:

• Uphill or downhill load
• Aerodynamic drag
• Rolling resistance
• Gear-specific torque demand

This gives tuners the ability to fine-tune part-throttle response, boost control, and timing under load, not just wide-open throttle runs.

 Why It Matters for You

When you get your vehicle tuned on our Eddy Current dyno:

• The tune behaves exactly like it does on the street or track.
• Data logging is more accurate because the engine is tuned under load rather than free-spinning.
• We can safely test drivability, transient response, and advanced torque modeling.

It’s the most controlled and repeatable tuning environment possible, and it’s the same approach used by OEMs during vehicle development.

 In Short

Our AWD Eddy Current Dyno uses electromagnetically powered brakes to apply precise, programmable resistance to all four wheels, letting us tune with real-world accuracy, repeatability, and safety.

Whether it’s a BMW SMG, Porsche PDK, or Audi DSG, this setup lets us dial in on peak power numbers and every detail of your tune.