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The Audi S4 is a performance-oriented sedan that has garnered a loyal following among car enthusiasts. One of the most popular modifications for this vehicle is upgrading to a 90mm throttle body. In this article, we will analyze the costs and benefits of this upgrade, explaining how it can add 15 horsepower for an investment of around $600.
Understanding the Throttle Body
The throttle body is a critical component of the engine’s air intake system. It controls the amount of air that enters the engine, which in turn affects performance. A larger throttle body can improve airflow, allowing for better combustion and increased power output.
Benefits of Upgrading to a 90mm Throttle Body
Upgrading to a 90mm throttle body on your Audi S4 can provide several advantages:
- Increased Horsepower: The primary benefit of this upgrade is the additional 15 horsepower it can provide.
- Improved Throttle Response: A larger throttle body can enhance throttle response, making the car feel more responsive and agile.
- Better Engine Efficiency: Improved airflow can lead to better fuel efficiency under certain driving conditions.
- Enhanced Performance Modifications: This upgrade can complement other performance mods, such as a cold air intake or upgraded exhaust system.
Cost Breakdown of the Upgrade
The cost of upgrading to a 90mm throttle body generally includes the price of the part itself, installation, and any additional modifications that may be necessary. Here’s a breakdown:
- Throttle Body Cost: Approximately $600 for a quality aftermarket throttle body.
- Installation Fees: Labor costs can range from $100 to $200 depending on the shop.
- Additional Modifications: If other upgrades are needed, such as tuning, expect to pay an extra $300 to $500.
Performance Gains: Is It Worth the Investment?
When considering whether to invest in a 90mm throttle body, it’s essential to weigh the performance gains against the costs. Here are some factors to consider:
- Horsepower Increase: 15 additional horsepower can significantly enhance driving experience.
- Cost vs. Performance: For $600, the horsepower increase is a good value compared to other performance upgrades.
- Long-Term Benefits: Improved throttle response and engine efficiency can lead to better overall performance.
Installation Process
Installing a 90mm throttle body on your Audi S4 can be done by a professional or as a DIY project. Here’s a general overview of the installation process:
- Tools Required: Basic hand tools, torque wrench, and possibly a tuning tool.
- Remove the Old Throttle Body: Disconnect the battery, remove air intake components, and unbolt the throttle body.
- Install the New Throttle Body: Position the new throttle body, bolt it in place, and reconnect all components.
- Tuning: After installation, tuning may be required to optimize performance.
Conclusion
Upgrading to a 90mm throttle body on your Audi S4 is a cost-effective way to gain additional horsepower and improve overall performance. With an investment of around $600, the benefits of increased horsepower, better throttle response, and enhanced engine efficiency make this modification worthwhile for enthusiasts looking to elevate their driving experience.