Can You Improve Engine Response in an Acura TLX with a Performance Throttle Body Spacer?

Understanding Throttle Body Spacers

Before we delve into the heart of the matter, it’s crucial to fully grasp what we’re dealing with. What exactly is a throttle body spacer?

A throttle body spacer is a small but meaningful component that fits between the throttle body and the intake manifold in an engine. This disk-shaped object has a distinct bullet-shaped channel through its center. The role it plays in an engine’s operations is to control airflow and increase the velocity of the air that gets into the combustion chamber.

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This component is usually constructed from high-quality, heat-resistant materials like aluminum or silver. The design aims to increase the swirling effect of the air as it enters the engine, thereby promoting better fuel atomization. This results in a more complete combustion of the air-fuel mixture, thereby potentially enhancing engine performance and fuel efficiency.

The Role of Throttle Body Spacers in a Honda Engine

In the context of the Acura TLX, a vehicle produced by Honda’s luxury vehicle division, the essence of the throttle body spacer is not any less significant. The Acura TLX, with its powerful V6 engine, can potentially benefit from the enhanced air-fuel mixture combustion provided by a performance throttle body spacer.

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The spacer, when correctly installed, can lead to an increase in engine power and torque across a wide range of engine speeds. This can contribute to improved throttle response and acceleration, aspects that you as drivers often seek.

Moreover, given the sophistication of the Acura TLX engine, a performance throttle body spacer can potentially help in improving fuel efficiency, too. The better atomization of the fuel could lead to less wastage and more effective utilization, leading to fewer trips to the fuel station.

Performance Throttle Body Spacers: Brands and Pricing

When it comes to performance throttle body spacers, there isn’t a shortage of options on the market. Brands like aFe Power offer high-quality spacers, meant to boost engine response and overall performance.

The aFe Silver Bullet Throttle Body Spacer is one such desirable product. It is constructed from durable T-6061 aluminum and features a serrated/helix design that enhances airflow. Its compatibility with the Honda Acura TLX engine and its promise of increased horsepower make it an attractive purchase.

But how much will this spacer dent your wallet? Prices of performance throttle body spacers can vary based on the brand and the specific features they offer. As of April 2024, the aFe Silver Bullet Throttle Body Spacer can be found at several online retailers and auto parts stores, with prices ranging from $100 to $150, excluding shipping charges.

Shipping, Return and Installation

Most retailers offer shipping services, so you can have the spacer delivered straight to your doorstep. Some even offer free shipping, though this usually depends on your location.

As for returns, it’s essential to verify with the retailer or the manufacturer. Most companies, including aFe Power, offer a return policy if the product is defective or doesn’t meet your expectations.

Installing the throttle body spacer in your Acura TLX engine is not a daunting task. Though it’s recommended to have a professional do it, you can also handle it if you have a basic understanding of how engines work. It’s a simple process of removing the throttle body, installing the spacer, and reattaching the throttle body.

Final Thoughts

So, can you improve engine response in an Acura TLX with a performance throttle body spacer? The answer is a resounding yes. This simple yet effective component can significantly enhance your driving experience by boosting engine power, torque, and fuel efficiency. Of course, these benefits can vary based on various factors like your driving style and the specific model of your car.

Additionally, it’s important to remember that while the throttle body spacer can offer performance benefits, it isn’t a substitute for regular vehicle maintenance. Always ensure your engine is well-maintained and in good condition for the best driving experience.

Quality and Reliability of Throttle Body Spacers

Understanding throttle body spacers and their role in enhancing engine performance is one thing, but how reliable are they?

Quality is a significant factor when choosing a throttle body spacer for your Acura TLX. High-grade materials such as aluminum are typically used in manufacturing these components due to their heat-resistant properties. Companies like aFe Power are known for their durable T-6061 aluminum spacers, which assure longevity and efficient performance.

Reliability, on the other hand, is critical, as the spacer’s efficiency impacts the overall performance of your engine. Top brands like aFe Power and others in the market ensure that their throttle body spacers undergo rigorous testing before they hit the market. Customers can be confident in their purchases, knowing that these components are designed to improve engine response and fuel efficiency in the long run.

Moreover, the Silver Bullet Throttle Body Spacer from aFe Power is specifically designed for compatibility with the Acura TLX, Honda Ridgeline, Honda Pilot and other models. Therefore, you can rest assured that it will fit perfectly onto your intake manifold and enhance your engine’s performance.

The Effectiveness of Throttle Body Spacers

The question of whether a throttle body spacer can improve the engine response of an Acura TLX still pervades. Experts and car enthusiasts have varying opinions on this subject. Some argue that the benefits of this component are more noticeable in older, carbureted vehicles rather than in newer, fuel-injected ones like the Acura TLX.

Yet, others claim to have observed significant improvements in horsepower, torque and even fuel economy after installing a performance throttle body spacer in their Acura TLX, Acura MDX, Honda Ridgeline, or Honda Pilot vehicles.

The consensus is that while the benefits may not be monumental, they are certainly noticeable and beneficial. For instance, better fuel atomization resulting from the bullet-shaped design of the spacer leads to a more complete combustion. This not only bolsters the engine’s power output but also improves fuel efficiency, leading to savings in the long run.


In conclusion, a performance throttle body spacer, such as the aFe Power Silver Bullet Throttle Body Spacer, can indeed improve the engine response in an Acura TLX. The enhanced air-fuel mixture combustion, improved torque, and increased engine power are all notable benefits of installing this component.

However, keep in mind that the effectiveness and reliability of a throttle body spacer depend largely on its quality and installation. Therefore, choose a high-grade spacer kit, ensure correct installation (preferably by a professional), and maintain regular vehicle maintenance for the best results.

So, while the throttle body spacer is not a magic bullet for all engine performance issues, it is certainly a valuable addition to your Acura TLX, contributing positively to your driving experience.