A blow-off valve (BOV) is a crucial component in any turbocharged or supercharged engine. Not only does it help regulate boost pressure and protect your engine from damage, but it also adds a distinct sound that many enthusiasts love. If you’re looking to make your BOV louder and more aggressive, here’s what you need to know.
Why Make Your BOV Louder?
For many car enthusiasts, the sound of a BOV is an essential part of the driving experience. A loud and aggressive BOV sound can add to the thrill and excitement of driving a high-performance car, and can also serve as an indication of your vehicle’s power and performance capabilities.
Methods for Making Your BOV Louder
There are several methods for making your BOV louder, and each method has its own advantages and disadvantages. Here are some of the most popular methods:
- Install a BOV with a Larger Flange: A BOV with a larger flange will allow more air to escape when the valve opens, resulting in a louder and more aggressive sound.
- Install a BOV with a Different Design: Some BOVs have different designs that can produce a louder sound. For example, a piston-style BOV can be louder than a diaphragm-style BOV.
- Adjust the Spring Tension: Adjusting the spring tension in your BOV can affect the sound it produces. A tighter spring can result in a louder and more aggressive sound.
- Install a High-Flow Intake or Exhaust: A high-flow intake or exhaust can increase the amount of air flowing through your engine, which can result in a louder BOV sound.
Tips for Making Your BOV Louder
Here are some tips to keep in mind when attempting to make your BOV louder:
- Keep it Legal: Be aware of any noise restrictions in your area, and make sure that the sound of your BOV is within legal limits.
- Avoid Over-Tightening the Spring: While tightening the spring in your BOV can result in a louder sound, over-tightening the spring can damage the valve and cause other issues.
- Consider the Quality of the BOV: While it may be tempting to opt for a cheap or lower-quality BOV, it’s important to choose a high-quality valve that is designed to handle the increased pressure and airflow that comes with a louder sound.
- Consult with a Professional: If you’re not familiar with the workings of a BOV, or if you’re unsure about how to make your BOV louder, it’s always best to consult with a professional mechanic or tuner who can guide you through the process.
How do I adjust the sound on my BOV?
Adjusting the sound on your BOV can be done in several ways, but the most common method is to adjust the spring tension. This is typically done by adjusting the set screw on the top of the valve, which compresses or decompresses the spring inside. A tighter spring will produce a louder and more aggressive sound, while a looser spring will result in a softer and less noticeable sound.
It’s important to note that over-tightening the spring can cause damage to the valve and other components, so it’s essential to follow the manufacturer’s instructions and make adjustments in small increments. Additionally, installing a high-flow intake or exhaust can also increase the sound of your BOV. It’s important to consult with a professional mechanic or tuner if you’re unsure about adjusting the sound on your BOV, to avoid any potential damage or safety issues.
How do I make my BOV flutter?
Making your BOV flutter, also known as compressor surge, can be achieved by adjusting the spring tension or by installing a different type of BOV. Compressor surge occurs when there is an imbalance in airflow between the compressor and the throttle body, resulting in a fluttering or chattering sound. To make your BOV flutter, you can adjust the spring tension to create a more significant pressure drop when the valve opens.
Additionally, installing a BOV that has a stiffer spring or a different design, such as a dual-piston or hybrid BOV, can also create a fluttering sound. It’s important to note that fluttering can indicate a problem with the engine or turbocharger, so it’s essential to consult with a professional if you’re experiencing excessive fluttering or other issues.
How can I make my turbo louder?
If you’re looking to make your turbo louder, there are several ways to achieve this. One of the most common methods is to install an aftermarket blow-off valve (BOV) or wastegate, which can produce a more aggressive sound when the turbo releases pressure. Additionally, installing a high-flow air intake or exhaust system can also increase the sound of your turbo.
Conclusion
A louder and more aggressive BOV sound can add to the thrill of driving a high-performance car. Whether you choose to install a larger flange, a different design, adjust the spring tension, or install a high-flow intake or exhaust, there are several methods for achieving the desired sound. It’s important to keep in mind any noise restrictions in your area, and to choose a high-quality BOV that can handle the increased pressure and air flow that comes with a louder sound. With these tips in mind, you can enjoy a more exciting and thrilling driving experience with your newly-loudened BOV.
