How to Read Dyno Graphs and What It Does to Your Car

How to Read Dyno Graphs and What It Does to Your Car

What exactly does a dyno graph show and what changes can chip tuning make to your car? For most people who are not technical specialists, dyno graphs can seem complicated. This step-by-step guide will explain how to understand them and how tuning your vehicle can benefit.

Key Elements of Dyno Charts

1. Car power (HP)

Power measured in horsepower (HP) shows the actual amount of energy transferred to the wheels of your car. On the graph, you will find it on the vertical axis on the left side . Most dynos illustrate power with a red line. This value shows how efficiently your vehicle uses the power of the engine depending on the RPM.

2. Torque (Nm)

Torque, measured in Newton meters (Nm), measures the force generated by the drive system. It is shown on the vertical axis on the right side of the graph . It is usually shown as a blue line. Torque is particularly important when accelerating and driving with a heavier load (towing a vehicle, driving uphill).

3. Engine Speed ​​(RPM)

The lower horizontal axis of the graph shows the engine speed, measured in RPM (rev/min). They show how power and torque change depending on the engine speed. How to understand this? For example, a petrol engine generating 215 HP at 5850 rpm generates 143 HP at 3000 rpm. Despite this, we define the car as 215 HP because we know that the more maximum power it generates, the more powerful it will also be in the lower RPM range.

Colors and Lines on the Chart

So we already have two lines – power and torque. Where will the next two come from?

How to Read Key Data?

At the top of the graph you will find the maximum power and torque values ​​both before and after tuning listed as numbers – this helps you not to focus on the X and Y Axes. The key is to compare these values ​​to see what gains you have achieved.

Why Are Charts Important?

1. Comparison Before and After Tuning

Dynamometer charts visualize the differences in the car's performance before and after modifications. Thanks to them, you can see what benefits the changes brought - both in terms of power and torque. Additionally, with this knowledge, you can use the car more consciously. - For example, many cars in the high rev range

exceeds the point where it gains power and starts to lose it. When you know where this moment begins for you, you will change gear. Insert a graph with an example

Summary

Dyno graphs are more than just numbers and lines – they are a visualization of the benefits that tuning brings to your car.

-The increase in power allows for smoother acceleration.

-More torque ensures driving dynamics.

-The dyno allows you to verify whether the changes have brought the expected results.