Power Measurement
on a 4WD Dyno

Accurate power and torque measurements. Result verification before and after chip tuning.

Professional 4WD Dynamometer
A 4WD load-controlled dynamometer allows us to reveal the vehicle’s real potential, not just “estimated figures”. We perform precise power and torque measurements and also use the dyno for proper engine calibration and result verification after tuning.

Our DYNOMAX4000 4x4 operates synchronously across all axles, providing stable load and reliable data for front-wheel, rear-wheel, and all-wheel drive vehicles. This is the only objective way to evaluate the effectiveness of chip tuning and engine modifications.

As a result, you get real, verified figures, smooth calibration under load, and confidence that the engine is operating safely and efficiently.

Power measurement on a 4WD dyno — accurate and honest results

A dynamometer (Dyno) is the only way to determine the real power and torque your vehicle actually produces. We perform measurements on a 4WD all-wheel-drive dyno with a load-controlled brake, which allows us to obtain highly accurate data even for high-power and AWD vehicles.

At AUTOCHIP.LV, the dyno is not used “just for show”, but as a core tool for control, calibration, and result verification — before and after chip tuning.

DYNOMAX4000 4x4 — professional-level measurements

We use the DYNOMAX4000 4WD Dyno — a synchronised dynamometer with an electromagnetic load brake that simulates real driving conditions: acceleration, resistance, inclines, and load under torque.

  • Power and torque measurement at the wheels
  • Calculation of drivetrain losses
  • Data correction according to ISO / SAE standards
  • Consideration of air temperature and atmospheric pressure
  • Data acquisition directly via OBD

Video: 4WD Dyno Power Test

Real example: Lancia Thema, Stage 1 tuning and a verification Dyno test on a 4WD dynamometer at AUTOCHIP.LV.

Why dyno testing is important

Vehicles often do not match their claimed power figures, especially after “garage tuning” or uncontrolled software modifications. A dyno reveals the real picture instead of relying on driving impressions.

  • Honest figures without guesswork or marketing
  • Result verification before and after chip tuning
  • Detection of power losses and unstable operation
  • Safe calibration under real load conditions

How the power measurement is performed

  • Step 1: initial power and torque measurement
  • Step 2: ECU tuning or adjustment (optional)
  • Step 3: control run and stability verification

This approach provides a real, verified result, not just a “feeling that it got better”.

Pricing and booking

4WD dyno power measurement — from €50 + VAT
The final price depends on the vehicle type and scope of work.

⚠️ Testing is not possible for vehicles with studded tyres.

Why Choose Us for Dyno Power Testing

Professional 4WD dynamometer, accurate data and complete vehicle safety

Professional 4WD Dynamometer

Synchronized axle operation and load-controlled braking ensure accurate, repeatable results for FWD, RWD and AWD/4x4 vehicles.

Honest, Data-Driven Results

We provide real power and torque figures — not assumptions. After the test, you receive detailed graphs with clear explanation.

Before & After Comparison

Measuring power before and after tuning allows objective evaluation of performance gains and engine stability under load.

Engine & Drivetrain Safety

We do not push vehicles beyond safe limits. Testing is performed under controlled load conditions to ensure reliability.

Your Vehicle Is Insured While in Our Care

While your vehicle is in our service and on the dyno, it is fully insured. This provides additional peace of mind and accountability.

Professional Methodology & Diagnostics

We use advanced diagnostic tools, ISO/SAE correction standards, and secure vehicle strapping to ensure reliable and comparable results.

Frequently Asked Questions About Dyno Power Testing

Everything you need to know about 4WD dyno testing, accuracy and results

What is a dynamometer (dyno)?
A dynamometer (dyno) is equipment used to measure a vehicle’s power output (HP/kW) and torque (Nm) under controlled load conditions. A 4WD dyno operates synchronously across axles, allowing accurate testing of FWD, RWD and AWD/4x4 vehicles.
What does a dyno power test show?
A dyno test provides full power and torque curves across the RPM range. It typically measures wheel horsepower, and drivetrain losses can be estimated separately. The graph reveals how smoothly and efficiently the engine delivers power.
Why does the dyno result differ from factory specifications?
Manufacturer figures usually represent engine (crank) horsepower measured in controlled laboratory conditions. A dyno often measures wheel horsepower, which includes drivetrain losses. Fuel quality, air temperature, pressure, tire grip and vehicle condition also affect real-world results.
How accurate is dyno testing?
Dyno testing is highly accurate when performed using proper methodology: consistent conditions, stable load control and correction factors such as ISO/SAE standards. The most reliable comparison is a before/after test on the same dyno.
Can you test AWD / 4x4 vehicles?
Yes. A 4WD dynamometer is specifically designed to test AWD and 4x4 vehicles safely and accurately by synchronizing both axles.
How much does a dyno power test cost?
Dyno testing typically starts from €50 + VAT. Final pricing depends on the vehicle type, drivetrain configuration and whether a single run or before/after comparison is required.
How long does a dyno session take?
A standard dyno session usually takes 20–40 minutes. The duration depends on vehicle setup, warm-up time and the number of test runs.
Is dyno testing safe for the engine and transmission?
Yes, provided the vehicle is mechanically sound. Testing is performed under controlled load conditions. The goal is safe and stable measurement — not pushing the engine beyond safe limits.
Why can’t you test vehicles with studded tires?
Studded tires can damage the dyno rollers and create excessive vibration, posing a safety risk. Testing is therefore only performed with non-studded tires.
Do you provide dyno graphs and reports?
Yes. After the test you receive detailed power and torque graphs. We can also explain how to interpret the curves and what changed during tuning.
Why can results differ between different dynos?
Differences may occur due to correction standards, load methodology, cooling efficiency, tire pressure, vehicle strapping and environmental conditions. For objective comparison, always test before and after on the same dyno.

Our services

Professional ECU tuning and diagnostics solutions for all vehicle types

Engine chip tuning — ECU calibration and performance gains

Engine chip tuning

Precise ECU calibration for improved power, torque and throttle response.

VAG oil pressure — diagnostics and solutions

VAG oil pressure

Diagnostics and solutions for low oil pressure issues.

ECU chip tuning catalog — 65,000+ vehicle models

ECU chip tuning catalog

Explore 65,000+ vehicle models with available ECU tuning solutions and performance data.

AdBlue SCR removal — fixing system errors

AdBlue / SCR removal

Proper system deactivation and elimination of AdBlue/SCR-related faults.

EGR removal — improving engine stability

EGR removal

Solving EGR issues, reducing carbon build-up and restoring performance.

DPF off — solving diesel particulate filter issues

DPF off

Diagnostics and complete solutions for DPF-related problems.

Vehicle diagnostics — fault scan and parameter checks

Vehicle diagnostics

Fault scanning, parameter monitoring and exhaust/smoke evaluation.

Consultation — choosing the right solution

Consultation

We’ll recommend the best solution for your vehicle and goals.