Hey guys! Are you looking to boost the performance of your 2011 BMW 335i N55? One of the most popular upgrades is installing a cold air intake. Not only can it improve your car's horsepower and torque, but it can also enhance the sound of your engine, giving it a more aggressive and sporty tone. In this guide, we'll dive into the world of cold air intakes for the N55 engine, helping you make an informed decision. We'll cover the benefits, factors to consider, and some top recommendations to help you find the perfect fit for your ride.

What is a Cold Air Intake?

A cold air intake is an aftermarket replacement for your car's factory air intake system. The primary goal is to provide the engine with a cooler, denser air supply. Cooler air contains more oxygen, and when more oxygen is available during combustion, your engine can produce more power. Stock air intake systems are often restrictive and draw air from the engine bay, where temperatures can be quite high. A cold air intake, on the other hand, is designed to draw air from outside the engine bay, typically from the front of the car, where the air is cooler.

The design of a cold air intake usually includes a less restrictive air filter and a smoother, wider intake tube. This allows for greater airflow compared to the factory system. By reducing the restriction and providing cooler air, a cold air intake can improve your engine's efficiency and performance. Many car enthusiasts install cold air intakes as one of their first modifications because they offer a noticeable improvement in throttle response and a slight increase in horsepower. Plus, the enhanced engine sound is a nice bonus!

Benefits of Installing a Cold Air Intake on Your 2011 BMW 335i N55

Installing a cold air intake on your 2011 BMW 335i N55 can bring several notable benefits. Let's break down the key advantages:

• Increased Horsepower and Torque: One of the most appealing benefits is the potential increase in horsepower and torque. By supplying the engine with cooler, denser air, the combustion process becomes more efficient. This can result in a noticeable improvement in your car's acceleration and overall performance. While the gains might not be massive, they are generally noticeable, especially in the mid-range of the RPM band.
• Improved Throttle Response: A cold air intake can significantly sharpen your car's throttle response. The less restrictive airflow allows the engine to react more quickly to your input on the accelerator pedal. This can make your driving experience feel more engaging and responsive, particularly during spirited driving or when merging onto the highway.
• Enhanced Engine Sound: Many enthusiasts love the enhanced engine sound that comes with a cold air intake. The intake allows you to hear more of the engine's natural sound, often resulting in a deeper, more aggressive tone. This can add to the overall driving experience, making your car feel more sporty and exciting.
• Better Fuel Efficiency: While performance gains are the primary focus, a cold air intake can also contribute to slightly better fuel efficiency. With a more efficient combustion process, the engine doesn't have to work as hard to produce power. This can translate to a modest improvement in fuel economy, especially during highway driving. However, keep in mind that any fuel efficiency gains can be offset by a tendency to enjoy the added performance, which might lead to more aggressive driving habits.
• Easy Installation: Most cold air intake kits are designed for relatively easy installation, often requiring only basic tools and mechanical knowledge. Many kits come with detailed instructions and all the necessary hardware. This makes it a modification that many DIY enthusiasts can tackle at home, saving on labor costs.
• Aesthetic Appeal: Many cold air intakes are designed to look good under the hood. They often feature polished aluminum or carbon fiber tubes and high-quality air filters. This can add a touch of style to your engine bay, making it look more impressive when you pop the hood.

Factors to Consider When Choosing a Cold Air Intake

Choosing the right cold air intake for your 2011 BMW 335i N55 involves considering several important factors to ensure you get the best performance and fit. Here's a breakdown of what to keep in mind:

• Airflow and Filtration: The primary function of a cold air intake is to increase airflow to the engine. Look for intakes that are designed to maximize airflow while still providing adequate filtration. A good filter will prevent dirt and debris from entering your engine, which can cause damage over time. Consider filters made from high-quality materials like cotton gauze or synthetic fibers, as they often offer a good balance of airflow and filtration.
• Material and Build Quality: The material and build quality of the intake can affect its durability and performance. Intakes made from aluminum or carbon fiber are popular choices due to their lightweight and heat-resistant properties. Ensure that the intake is well-constructed with sturdy connections and high-quality hardware to prevent leaks and ensure a long lifespan.
• Heat Shielding: One of the main goals of a cold air intake is to draw in cooler air. Look for intakes that come with a heat shield or are designed to minimize heat soak from the engine bay. A heat shield can help block hot air from entering the intake, ensuring that the engine receives the coolest air possible.
• Installation and Fitment: Consider how easy the intake is to install and whether it is designed to fit your specific vehicle. Some intakes are designed as direct replacements for the factory system, making installation relatively straightforward. Check for detailed instructions and ensure that all necessary hardware is included. Read reviews from other users to get an idea of the installation process and any potential issues.
• CARB Compliance: If you live in California or another state with strict emissions regulations, check whether the cold air intake is CARB (California Air Resources Board) compliant. CARB-compliant intakes have been tested and approved for use in these states, ensuring that they meet emissions standards. Using a non-CARB-compliant intake in these states could result in failing an emissions test.
• Price: Cold air intakes can range in price from relatively affordable to quite expensive. Set a budget and look for intakes that offer the best value for your money. Keep in mind that a higher price doesn't always guarantee better performance, so do your research and read reviews to make an informed decision.
• Brand Reputation: Consider the reputation of the brand when choosing a cold air intake. Established brands with a history of producing high-quality performance parts are generally a safe bet. Look for brands that offer good customer support and stand behind their products.

Top Cold Air Intake Recommendations for Your 2011 BMW 335i N55

Alright, let's get down to the nitty-gritty! Here are some top cold air intake recommendations for your 2011 BMW 335i N55, based on performance, quality, and value:

1. aFe Power Magnum FORCE Stage-2 Cold Air Intake System: aFe Power is a well-known brand in the performance aftermarket, and their Magnum FORCE Stage-2 intake is a top choice for the N55. It features a high-flow air filter, a heat shield to block hot air, and a smooth intake tube for improved airflow. This intake is designed to deliver significant gains in horsepower and torque, along with enhanced throttle response and a more aggressive engine sound. It's a bit on the pricier side, but the performance benefits make it worth the investment.
2. Injen Technology SP Series Cold Air Intake System: Injen Technology is another reputable brand that offers high-quality cold air intakes. Their SP Series intake for the N55 features a mandrel-bent aluminum intake tube, a washable and reusable air filter, and a heat shield to protect against heat soak. This intake is designed to improve airflow and increase horsepower and torque, while also providing a sporty engine sound. It's a popular choice among BMW enthusiasts for its performance and durability.
3. Burger Motorsports (BMS) Performance Intake: The BMS Performance Intake is a popular choice for N55 owners looking for a simple, yet effective upgrade. It replaces the factory airbox with a high-flow filter and a less restrictive intake tube. While it may not offer the same level of performance gains as some of the more expensive options, it provides a noticeable improvement in throttle response and engine sound at a more affordable price point. It's also very easy to install, making it a great option for DIY enthusiasts.
4. K&N 57 Series Cold Air Intake Kit: K&N is a household name in the world of air filters and intakes, and their 57 Series Cold Air Intake Kit is a solid choice for the N55. It features a high-flow air filter, a mandrel-bent aluminum intake tube, and a heat shield to minimize heat soak. This intake is designed to improve airflow and increase horsepower and torque, while also providing a sporty engine sound. It's a well-rounded option that offers a good balance of performance, quality, and price.
5. Mishimoto Performance Air Intake System: Mishimoto is known for their high-quality cooling and performance products, and their Performance Air Intake System for the N55 is no exception. It features a high-flow air filter, a silicone intake tube, and a heat shield to block hot air. This intake is designed to maximize airflow and improve horsepower and torque, while also providing a sleek and stylish look under the hood. It's a bit more expensive than some of the other options, but the quality and performance justify the price.

Installation Tips for Your New Cold Air Intake

So, you've got your new cold air intake, and you're ready to install it? Awesome! Here are some tips to make the installation process as smooth as possible:

• Read the Instructions: This might seem obvious, but it's crucial to read the installation instructions carefully before you start. Make sure you understand each step and have all the necessary tools and hardware on hand.
• Disconnect the Battery: Before you start working on your car, disconnect the negative terminal of the battery. This will help prevent any electrical accidents.
• Take Your Time: Don't rush the installation process. Take your time and double-check each step to ensure that everything is installed correctly.
• Use the Right Tools: Make sure you have the right tools for the job. This might include a socket set, screwdrivers, pliers, and a torque wrench.
• Tighten Connections: Ensure that all connections are tight and secure. This will help prevent leaks and ensure that the intake is functioning properly.
• Double-Check Everything: Once you've completed the installation, double-check everything to make sure that all connections are secure and that there are no loose parts.
• Test Drive: After the installation is complete, take your car for a test drive to make sure that everything is working properly. Listen for any unusual noises and check for any error codes.

Final Thoughts

Choosing the right cold air intake for your 2011 BMW 335i N55 can significantly improve your car's performance and driving experience. By considering the factors discussed in this guide and exploring the top recommendations, you can make an informed decision and find the perfect intake for your needs. Whether you're looking for increased horsepower, improved throttle response, or a more aggressive engine sound, a cold air intake can be a great addition to your BMW. Happy modding, guys! And remember, always follow the installation instructions and take your time to ensure a proper fit and optimal performance.