BMW 335i N55: Best Cold Air Intake (2011)

by Alex Braham 42 views

The BMW 335i N55 is a fantastic car, known for its performance and responsiveness. Upgrading to a cold air intake can really unleash its full potential. But with so many options out there, how do you choose the best cold air intake for your 2011 BMW 335i N55? Let's dive into what makes a great intake and explore some top contenders.

Why Upgrade to a Cold Air Intake?

Before we get into specific models, let's cover why you might want to upgrade your intake in the first place. The factory intake on the BMW 335i N55 is designed for optimal efficiency and noise reduction, which often means it's somewhat restrictive. A cold air intake, on the other hand, is designed to:

  • Increase Horsepower and Torque: By allowing the engine to breathe easier, a cold air intake can boost horsepower and torque. The N55 engine thrives on airflow, and a less restrictive intake helps it generate more power. This is because the engine doesn't have to work as hard to pull in air, resulting in more efficient combustion and increased output. It’s like letting an athlete breathe freely versus breathing through a straw – the difference is noticeable!
  • Improve Throttle Response: Many drivers notice a sharper throttle response after installing a cold air intake. This means the car feels more responsive to your inputs, making it more enjoyable to drive. The quicker response time comes from the engine's ability to access air more readily, leading to a more immediate reaction when you hit the gas pedal. For daily driving and spirited runs, this can significantly enhance the driving experience.
  • Enhance Engine Sound: Let's be honest, a throaty engine note is a big part of the driving experience. A cold air intake can amplify the sound of your engine, giving it a more aggressive and sporty tone. The turbocharger might also become more audible, adding to the auditory thrill. The enhanced sound is a byproduct of the increased airflow and can turn heads as you accelerate.
  • Improve Fuel Efficiency: While not the primary reason for upgrading, some drivers report a slight improvement in fuel efficiency after installing a cold air intake. This is because the engine operates more efficiently, potentially saving you money at the pump over time. The improved combustion process ensures that the engine extracts more energy from each drop of fuel. Note that the actual gains can vary based on driving habits and conditions.

What to Look for in a Cold Air Intake

Choosing the right cold air intake for your 2011 BMW 335i N55 involves considering several factors. Here are some key things to keep in mind:

  • Filter Quality: The air filter is the heart of the intake. Look for high-quality filters that offer excellent filtration without restricting airflow. Options include oiled cotton filters, dry filters, and even some hybrid designs. Oiled filters generally offer superior filtration but require periodic cleaning and re-oiling. Dry filters are easier to maintain but may not filter as effectively. Researching and choosing the best filter type ensures the longevity and health of your engine.
  • Intake Tube Material and Design: The material and design of the intake tube can affect airflow and heat resistance. Popular materials include aluminum, carbon fiber, and high-density polyethylene. Smooth, mandrel-bent tubes are ideal for minimizing turbulence and maximizing airflow. Aluminum tubes are excellent for heat dissipation, while carbon fiber offers lightweight and thermal insulation benefits. The design should also ensure a direct path for air to enter the engine, reducing any potential restrictions.
  • Heat Shielding: Heat is the enemy of performance. A good cold air intake will include a heat shield to protect the filter from engine bay heat. This helps ensure that the intake is actually drawing in cooler air, maximizing its effectiveness. Heat shields are typically made from metal or plastic and are strategically placed to block radiant heat from the engine. Without adequate heat shielding, the intake can draw in hot air, negating the benefits of the cold air intake system.
  • Ease of Installation: Unless you're a seasoned mechanic, you'll want an intake that's relatively easy to install. Look for kits that include clear instructions and all the necessary hardware. Some intakes are designed as direct replacements for the factory unit, making the installation process straightforward. Checking online forums and reviews can provide insights into the installation experiences of other 335i owners.
  • Brand Reputation: Stick with reputable brands known for quality and performance. Brands like aFe Power, Injen, and Burger Motorsports have a solid track record in the BMW aftermarket. Established brands invest in research and development to ensure their products meet high standards. Reading reviews and comparing products from different brands can help you make an informed decision.

Top Cold Air Intakes for the 2011 BMW 335i N55

Now that we know what to look for, let's explore some of the best cold air intake options for your 2011 BMW 335i N55.

aFe Power Momentum GT Intake System

The aFe Power Momentum GT Intake System is a popular choice among BMW enthusiasts. It features a high-flow air filter, a smooth intake tube, and a robust heat shield. This intake is designed to deliver maximum horsepower and torque gains while providing excellent filtration. The aFe Power intake is known for its quality construction and performance improvements. Many users report noticeable gains in throttle response and engine sound.

Injen SP Series Cold Air Intake

The Injen SP Series Cold Air Intake is another top contender. It features a unique intake tube design that optimizes airflow and minimizes turbulence. The Injen intake also includes a heat shield to protect the filter from engine bay heat. This Injen intake system is designed for easy installation and offers a significant improvement in engine performance. Its reputation for reliability and performance makes it a favorite among BMW owners.

Burger Motorsports BMS Performance Intake

The Burger Motorsports BMS Performance Intake is a simple yet effective upgrade for the N55 engine. It replaces the factory airbox with a high-flow filter, allowing for increased airflow and improved performance. This BMS intake is known for its ease of installation and noticeable gains in throttle response. It’s a cost-effective option for those looking to improve their engine's breathing without breaking the bank. Many users appreciate its straightforward design and the immediate performance boost it provides.

Installation Tips

Before you start the installation process, here are a few tips to keep in mind:

  • Read the Instructions: This might seem obvious, but it's crucial to read the installation instructions carefully before you start. This will help you avoid mistakes and ensure a smooth installation. Understanding each step ensures you don't miss anything important, like sensor placements or tightening torques.
  • Gather Your Tools: Make sure you have all the necessary tools before you begin. This might include screwdrivers, sockets, wrenches, and pliers. Having the right tools at your disposal will save you time and frustration. A well-prepared toolkit can make the installation process much smoother and more efficient.
  • Disconnect the Battery: Disconnecting the battery is a safety precaution that prevents electrical issues during the installation process. It’s a simple step that can save you from potential headaches down the road. Always ensure the car is completely powered down before working on any electrical components.
  • Take Your Time: Don't rush the installation process. Take your time and double-check your work to ensure everything is properly installed. Rushing can lead to mistakes and potentially damage your car. A careful and methodical approach ensures a professional-quality installation.

Final Thoughts

Upgrading to a cold air intake is a great way to improve the performance and sound of your 2011 BMW 335i N55. By choosing the best cold air intake for your needs and following the installation tips, you can enjoy a more responsive and exhilarating driving experience. Remember to consider factors like filter quality, intake tube design, heat shielding, and brand reputation when making your decision. With the right intake, you can unlock the full potential of your N55 engine and enjoy the enhanced performance it offers.

So, what are you waiting for? Give your 335i N55 the cold air intake it deserves and experience the difference!