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The Golf Tee mod is a modification that can be made to some BMW car models, including the e36 328i, M3, and some newer 3 series. It involves plugging the vacuum hose or unplugging the vacuum cable to keep a flap open, allowing more sound through the exhaust. This modification is often done to make the exhaust louder, particularly at low RPMs. It is considered a simple modification that can be completed in a short amount of time.
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What You'll Learn
Golf tee mod for BMW 328i
The "Golf Tee" mod is a modification that can be made to some BMW vehicles, including the E36 328i and M3, as well as some newer 3 series models. It involves manipulating the car's exhaust system to alter the sound and performance.
For the BMW 328i, the Golf Tee mod specifically targets the butterfly valve within the exhaust system. This valve is designed to open at higher RPMs and close at lower RPMs to regulate the exhaust sound and flow. By performing the Golf Tee mod, the valve is held open permanently, resulting in increased sound and flow at all RPMs.
To execute the Golf Tee mod on a BMW 328i, one common approach is to locate the vacuum line associated with the butterfly valve. Instead of inserting a golf tee into the vacuum line, some owners choose to simply unplug the vacuum cable, achieving the same effect of holding the valve open. This modification can make the exhaust louder, particularly at idle.
It is important to note that modifying the exhaust system can have implications for sound levels and emissions. While some owners have reported no issues with emissions tests after performing the Golf Tee mod, it is advisable to consult with professionals or mechanics familiar with BMW models before attempting any modifications.
Additionally, it is worth considering the potential impact on sound quality. Some enthusiasts opt for a combination of modifications, such as leaving the filler in the muffler, to achieve their desired sound profile. Clear and crisp exhaust notes can be prioritized over tinny sounds by making informed decisions about the filler and other components.
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Golf tee mod vs. performance exhaust
The "Golf Tee" mod is a modification that can be made to some BMW vehicles, including the E92 335i, 328i, and M3, as well as some newer 3 Series models. It involves placing a golf tee or a small hose clamp into the vacuum hose to prevent the hose from activating a valve that reduces exhaust noise at low RPMs. This modification results in a louder exhaust sound, particularly at idle and low RPMs. The procedure is straightforward and can be performed by locating the butterfly valve near the exhaust, finding the vacuum hose, and inserting a golf tee or a small hose clamp to hold the valve open.
On the other hand, a performance exhaust system typically refers to an aftermarket upgrade that focuses on enhancing the sound and flow characteristics of the exhaust system. In the context of BMW vehicles, such as the E90 335i, the performance exhaust often involves replacing the stock muffler with a less restrictive design. The stock muffler typically contains fiberglass or steel wool as a sound dampening material, which can restrict flow. Performance mufflers, on the other hand, direct the flow through internal tubes or baffles, resulting in reduced backpressure and a louder, more aggressive exhaust note.
When comparing the Golf Tee mod and a performance exhaust, there are several considerations:
- Sound: Both modifications aim to increase the volume of the exhaust sound. The Golf Tee mod primarily affects the sound at idle and low RPMs, making the car louder in those operating ranges. A performance exhaust, on the other hand, typically provides a more comprehensive enhancement, resulting in a louder and more throaty sound across the entire RPM range.
- Ease of Installation: The Golf Tee mod is renowned for its simplicity and can be performed by most car enthusiasts with basic tools. It does not require any permanent modifications to the vehicle and can be easily reversed by removing the golf tee or hose clamp. In contrast, installing a performance exhaust may involve cutting and welding exhaust components, and it typically requires more advanced tools and mechanical knowledge.
- Cost: The Golf Tee mod is a cost-effective solution as it only requires a standard golf tee or a small hose clamp, which are inexpensive and readily available. Conversely, a performance exhaust system can range from several hundred to over a thousand dollars, depending on the brand and quality of the components.
- Performance: While the Golf Tee mod primarily focuses on altering the exhaust sound, some enthusiasts have reported subtle improvements in performance, particularly in the lower RPM range. The performance exhaust, as its name suggests, is designed with performance in mind and can offer improved flow characteristics, potentially enhancing the vehicle's horsepower and torque output. However, it is important to note that the stock OEM exhaust on many modern vehicles may not significantly restrict airflow, so the performance gains from an aftermarket exhaust may be modest.
- Customization: The Golf Tee mod is a straightforward modification that primarily affects the exhaust sound. A performance exhaust, on the other hand, offers a wider range of customization options. Enthusiasts can choose from various materials, pipe diameters, and muffler designs to tailor the exhaust system to their desired sound and performance goals.
In conclusion, the Golf Tee mod and performance exhaust serve different purposes. The Golf Tee mod is a simple, cost-effective solution for those seeking a louder exhaust sound, particularly at idle and low RPMs, without making significant modifications to the vehicle. On the other hand, a performance exhaust provides a more comprehensive upgrade, delivering enhanced sound, potential performance improvements, and customization options for enthusiasts who want to personalize their vehicle's exhaust system.
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Golf tee mod for M135i
The "Golf Tee" mod is a modification made to some BMW vehicles, including the M135i and 335i models. This mod involves manipulating the vehicle's exhaust system to alter the sound and performance.
In the M135i model, the "Golf Tee" mod is performed by unplugging an electrical cable connected to the exhaust valve, allowing the flap to stay open permanently. This modification is intended to enhance the exhaust note and increase the volume, particularly at low speeds and RPMs. It is important to note that this modification may void the vehicle's warranty and should be approached with caution.
The M135i model differs from the 335i in terms of the method used to achieve the "Golf Tee" mod. Unlike the 335i, which involves disconnecting a vacuum pipe and plugging it with a golf tee, the M135i requires the disconnection of the electrical plug located in the boot. This is because the M135i does not have a vacuum pipe. While this modification does not appear to cause any detrimental effects to the car's performance, it may trigger error codes in some vehicles.
The "Golf Tee" mod is often considered a simpler and more cost-effective alternative to a performance exhaust modification. It is important to note that while the mod increases the volume of the exhaust, it does not affect the backpressure or flow characteristics of the exhaust system in the same way that a performance exhaust modification would. Therefore, the two modifications are not equivalent, and each has its own advantages and disadvantages.
Some owners who have performed the "Golf Tee" mod on their M135i vehicles have reported noticeable sound improvements, particularly in the 1500-2500 RPM range. However, it is important to consider that individual results may vary, and some people may find the difference less significant. Additionally, there may be slight drone effects due to the increased sound.
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Golf tee mod for E90 335i
The Golf Tee mod for the E90 335i is a modification that involves holding a valve open, which is usually closed at low revs to reduce noise. This modification results in a louder exhaust sound at all RPMs, similar to the sound above a certain RPM without the mod. The Golf Tee mod is often recommended as an alternative to the Performance Exhaust mod, which uses straight pipes instead of pipes with holes, resulting in increased sound and flow.
The Golf Tee mod is achieved by cutting a BMW E90 exhaust where there are dimples, which suggests where to cut to retain the factory midpipe with the U-pipe. This mod is relatively simple and can be done as a DIY project, with many people reporting successful results.
One benefit of the Golf Tee mod is that it does not trigger the CEL (Check Engine Light) error, which can occur when the cable controlling the flap is unplugged, causing the flap to remain open. By keeping the flap open without unplugging the cable, the Golf Tee mod prevents this error while still allowing for increased sound through the exhaust.
It is important to note that the Golf Tee mod may affect emissions, particularly during the warm-up period when the car may blow out more emissions. Additionally, some people choose to leave the filler in the muffler when doing the mod to avoid any tinny sounds and achieve clear and crisp exhaust notes.
Overall, the Golf Tee mod for the E90 335i is a popular modification that can enhance the sound of the exhaust while maintaining the functionality of the vehicle.
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Golf tee mod for E92 335i
The Golf Tee Mod is a modification for the BMW 335i, specifically the E90 and E92 models, which are part of the E9X series. This mod is often recommended as an alternative to the Performance Exhaust modification.
The Golf Tee Mod holds a valve open, which is normally closed at low revs to reduce noise. This results in a louder exhaust note at all RPMs, similar to the sound above a certain RPM without the mod. The Performance Exhaust modification, on the other hand, involves replacing the pipes with straight pipes or perforated pipes, enhancing flow and producing a louder sound.
The Golf Tee Mod is achieved by using a golf tee to prop open a flap that normally opens at higher RPMs and closes at lower RPMs. This modification allows more sound to pass through the exhaust without triggering the CEL (Check Engine Light). The CEL is triggered when the cable controlling the flap is unplugged, and the flap remains open.
Some owners of the BMW 335i have opted for the Golf Tee Mod, while others have chosen to install a performance muffler as part of the Performance Exhaust modification. This involves removing the fibreglass and steel wool filler inside the muffler to reduce restriction and increase flow. However, removing the filler can result in a louder and tinnier sound, which may not be desirable for all car owners.
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Frequently asked questions
The "Golf Tee" mod 335i is a modification for BMW car models that makes the exhaust louder below 2500 RPMs.
To perform the mod, you need to locate the butterfly valve near the centre of the car, behind the tailpipe. There will be a hose and a wire attached to it. Pull out the hose, stick a golf tee in it, and secure the tube.
The mod prevents the vacuum pump from closing the valve, stopping the intake of air and killing the vacuum. This results in increased sound through the exhaust.
