What You Will Read in This Article:

  • What does "Linear Throttle Mapping" mean?
  • Why is “Linear Throttle Mapping” done?
  • Comparison between “Standard Throttle Mapping” and “Linear Throttle Mapping”
  • Software for “Linear Throttle Mapping”
  • “Linear Throttle Mapping” Tutorial:

What Does “Linear Throttle Mapping” Mean?

There are mainly two types of throttle valves in cars: mechanical throttle valve and electronic throttle valve (read more about it in TVA Removal article). If we want to speak in mathematical terms and graphs, the mechanical throttle valve has a linear graph (as shown below) because the ratio between the throttle valve angle and the engine load is constant and the graph has a constant slope. However, for electronic throttle valves (which are newer), this ratio is not constant and the graph of the throttle valve angle and the engine load is not linear (it is curvilinear). Now, the term "linear throttle mapping" is derived from this and refers to the linearization of the throttle valve angle and the engine load ratio (the word "linear" refers to this issue). In other words, in this method (similar to the mechanical throttle valve), the car accelerates directly with every pressure on the gas pedal.

Why is “Linear Throttle Mapping” Done?

In many everyday driving situations, there is no need to extract maximum engine power, so it is necessary to control the engine power in different ways (including keeping the engine running in the unloaded state). One of these methods is the use of throttle valves. These throttle valves, with the help of a butterfly valve, control the intake air flow to the engine. In fact, it is the ECU that, with the help of sensors, gives commands to make changes in the air intake and also adjust the angle of the throttle valve. Therefore, we should know that electronic throttle valves have more limitations compared to mechanical throttle valves. Another point is that according to the principles of automatic control, electronic throttle valves have inherent delays (although minimal) compared to mechanical throttle valves.

Given these limitations and delays in the standard throttle mapping, there are drivers who are interested in removing these limitations and getting closer to the maximum power of their vehicles. Track drivers, highway drivers, long-distance drivers, and enthusiasts of power and speed fall into this category. These individuals come to us requesting the implementation of linear throttle mapping instead of standard throttle mapping in their vehicles.

Comparison Between “Standard Throttle Mapping” and “Linear Throttle Mapping”:

In the previous section, we compared these two modes. In this section, we can briefly say that standard throttle mapping is probably a better option for everyday driving in urban areas and traffic. Standard throttle mapping helps your vehicle emit less pollution during traffic or lighter loads, and your fuel consumption will be relatively more optimal. Therefore, for this type of vehicle function, standard throttle mapping will be relatively more suitable, and the vehicle will perform more efficiently.

However, if your use of the vehicle goes beyond or differs from the previous mode, linear throttle mapping can be an attractive choice; No matter how much pressure you apply on the acceleration pedal, the vehicle will consume that amount of gas and produce power without hesitation or delay (or at least less than standard throttle mapping).

Software For “Linear Throttle Mapping”:

At CaracalTech Company, we have years of experience in calibration and ECU remapping. We have the ability to fully identify and modify the tables related to linear throttle mapping in all related ECUs. Here, reconfiguring the maps related to linear throttle mapping can be done using various techniques. Additionally, comprehensive training on the operation of both standard throttle mapping and linear throttle mapping in ECUs is available so that with just one proper training, you can identify and select the tables related to linear throttle mapping in EMS and make the necessary changes.

Additionally, in some vehicles, only “LINEAR THROTTLE MAPPING” is not sufficient, as DTCs may appear and further modifications may be required. However, we can solve this problem for you using diagnostic devices or ECU remapping so that “LINEAR THROTTLE MAPPING” is done properly and completely in your vehicle. Proper remapping alongside “LINEAR THROTTLE MAPPING” can display better performance from your vehicle.

“Linear Throttle Mapping” Tutorial:

Here, you can learn the principles and tips for “LINEAR THROTTLE MAPPING” in different vehicles once and for all. HERE is the link to the tutorial video on “LINEAR THROTTLE MAPPING” in various Tuning Software and ECUs.

You can watch instructional videos of ECM Titanium Training and also WinOLS Training Course.

If necessary, you can upload your files in Tuning File Service for us to make changes that you want in different ECUs.

📍For more information and probable problems feel free to contact us: support@caracaltech.com