Why Don’t Cars Use Individual Throttle Bodies?
Individual throttle bodies (ITBs) are a type of intake system that uses a separate throttle body for each cylinder. This is in contrast to a single throttle body system, which uses a single throttle body to control the airflow for all of the cylinders. ITBs are often used on high-performance engines, as they can provide better throttle response and more precise air/fuel mixture control.
However, ITBs also have some drawbacks. They are more complex and expensive to manufacture than single throttle body systems. They can also be more difficult to tune, and they can lead to increased emissions.
Advantages of ITBs
- Improved throttle response
- More precise air/fuel mixture control
- Increased power and torque
Disadvantages of ITBs
- More complex and expensive to manufacture
- More difficult to tune
- Increased emissions
Why Don’t Cars Use ITBs?
Despite their advantages, ITBs are not used on most production cars. There are a number of reasons for this, including:
- Cost: ITBs are more expensive to manufacture than single throttle body systems.
- Complexity: ITBs are more complex to design and tune than single throttle body systems.
- Emissions: ITBs can lead to increased emissions, which can make them difficult to meet emissions regulations.
Conclusion
ITBs offer a number of advantages over single throttle body systems, but they also have some drawbacks. Cost, complexity, and emissions are all factors that have prevented ITBs from becoming more widespread on production cars.
