How To Cold Air Intake On 2012 G37

So, you're thinking about installing a cold air intake on your 2012 Infiniti G37? Great choice! A cold air intake is a popular modification that many G37 owners make to potentially improve their vehicle's performance. This article will guide you through the process, helping you understand why you might want one, how to choose the right one, and what to expect during the installation. We'll also touch on real-world owner experiences and answer some frequently asked questions.

Why a Cold Air Intake Matters for Your 2012 G37

A cold air intake (CAI) replaces your car's factory air intake system. The factory system is often designed with cost and noise reduction in mind, rather than optimal airflow. The primary purpose of a CAI is to draw cooler air into the engine. Cooler air is denser, containing more oxygen per unit volume. This increased oxygen content, when mixed with fuel, can lead to a more complete and efficient combustion process, potentially resulting in:

• Increased Horsepower and Torque: By allowing the engine to breathe more freely, a CAI can help unlock hidden horsepower and torque. The gains are typically modest, often in the range of 5-15 horsepower, but they can be noticeable, especially at higher RPMs.
• Improved Throttle Response: A CAI can make your throttle feel more responsive, giving you a quicker and more immediate feel when you press the accelerator.
• Enhanced Engine Sound: Many CAIs produce a more aggressive and sporty engine sound, adding to the overall driving experience. You'll often hear a more pronounced induction noise.
• Slightly Improved Fuel Economy: While not the primary reason to install a CAI, some users report a small improvement in fuel economy, particularly during highway driving. This is due to the engine running more efficiently.

It's important to note that the actual performance gains from a CAI can vary depending on several factors, including the specific CAI model, the condition of your engine, and other modifications you may have made. A well-maintained engine will see better results. Additionally, aftermarket tunes may be necessary to fully realize the CAI's potential in some cases. Simply put, a tune will properly adjust the air-fuel ratio of your engine with the increased airflow.

How to Choose the Right Cold Air Intake for Your 2012 G37

With numerous CAI options available for the 2012 G37, selecting the right one can feel overwhelming. Here's a breakdown of key factors to consider:

Types of Cold Air Intakes:

• Short Ram Intakes (SRI): These intakes position the air filter closer to the engine. They are generally easier to install and less expensive but may draw in warmer air from the engine bay, potentially negating some of the benefits of a CAI.
• Long Tube Intakes (True Cold Air Intakes): These intakes place the air filter in a location further away from the engine, typically behind the bumper or near the wheel well. This allows them to draw in cooler air, maximizing performance gains. However, they can be more difficult to install and may be more susceptible to water ingestion in wet conditions.
• Hybrid Intakes: Some intakes attempt to blend the benefits of both SRIs and long tube intakes.

Material and Construction:

• Intake Tubing: Look for intakes made from high-quality materials like aluminum or carbon fiber. These materials are durable, lightweight, and resistant to heat. Avoid intakes made from cheap plastic, as they may be prone to cracking or melting.
• Air Filter: The air filter is a crucial component of the CAI. Opt for a reusable and washable filter made from high-quality materials like cotton gauze or synthetic fibers. These filters provide excellent filtration while allowing for good airflow. Consider oiled vs. dry filters. Oiled filters generally offer slightly better filtration but require more maintenance.

Brand Reputation and Reviews:

Research reputable brands known for producing high-quality CAIs. Some popular brands for the G37 include:

• Stillen: Known for their high-quality intakes and other performance parts.
• Injen: Offers a wide range of intakes with various designs and price points.
• AEM: A well-established brand with a reputation for performance and reliability.
• K&N: Another popular and reputable brand with a long history in the automotive industry.

Read online reviews from other G37 owners to get a sense of their experiences with different CAI models. Pay attention to comments about performance gains, ease of installation, and overall quality.

Installation Difficulty:

Assess your mechanical skills and comfort level before choosing a CAI. Some intakes are relatively easy to install with basic tools, while others may require more specialized tools and expertise. Consider whether you'll be installing it yourself or having a professional do it. Most intakes will have detailed instructions, if not, there are plenty of DIY videos online.

Price:

CAIs for the G37 can range in price from around $200 to $500 or more. Set a budget and choose an intake that offers the best value for your money. Don't necessarily assume that the most expensive intake is always the best.

CARB EO Number (California Residents):

If you live in California or another state that follows California's emissions standards, make sure the CAI you choose has a CARB EO (Executive Order) number. This indicates that the intake has been tested and approved for use on your vehicle and is legal to use on public roads.

Real-World Owner Experiences with Cold Air Intakes on 2012 G37s

Many 2012 G37 owners have shared their experiences with CAIs online. Here's a summary of common themes:

• Noticeable Performance Improvement: Most owners report a noticeable improvement in throttle response and acceleration, particularly in the mid-range and high-end RPMs.
• Enhanced Engine Sound: The increased intake noise is a popular benefit for many owners. They describe it as a deeper, more aggressive sound.
• Easy Installation (for some models): Some CAIs are relatively easy to install, even for novice mechanics. However, others can be more challenging, requiring more time and effort.
• Potential for Water Ingestion (long tube intakes): A few owners have reported issues with water ingestion when driving through heavy rain or puddles with long tube intakes. This can be mitigated by installing a hydro shield or avoiding driving in extremely wet conditions.
• Need for a Tune (for optimal results): While not always necessary, many owners recommend getting a tune after installing a CAI to optimize the engine's air-fuel ratio and maximize performance gains.

Important Note: It's crucial to read reviews and forums specific to your 2012 G37 model year. Experiences can vary slightly depending on the specific vehicle configuration.

Frequently Asked Questions (FAQs) About Cold Air Intakes on 2012 G37s

Will a cold air intake void my warranty?

Installing a CAI *could* potentially void your warranty, but it depends on the specific terms of your warranty and the dealership's policies. Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because you installed an aftermarket part. However, if the CAI directly causes a failure, the manufacturer may not be responsible for the repair. It's always best to check with your dealership before installing any aftermarket parts.

How often do I need to clean my air filter?

The cleaning frequency depends on the type of filter and the driving conditions. In general, you should clean your reusable air filter every 15,000 to 30,000 miles. However, if you drive in dusty or dirty conditions, you may need to clean it more frequently. Follow the manufacturer's instructions for cleaning and oiling your air filter.

Can I install a cold air intake myself?

Yes, many CAIs can be installed by DIYers with basic mechanical skills and tools. However, it's important to follow the instructions carefully and take your time. If you're not comfortable working on your car, it's best to have a professional install the CAI.

Will a cold air intake make my car louder?

Yes, a CAI will typically make your car louder, particularly during acceleration. The increased intake noise is often described as a deeper, more aggressive sound. If you're concerned about noise levels, you may want to consider a CAI with a less aggressive design or install a sound dampening kit.

Is a tune required after installing a cold air intake?

A tune is not always required, but it is often recommended to maximize the performance gains from a CAI. A tune will optimize the engine's air-fuel ratio and timing, allowing it to take full advantage of the increased airflow. Without a tune, you may not see the full potential of the CAI.

Will a cold air intake improve my fuel economy?

While not guaranteed, some users report a slight improvement in fuel economy after installing a CAI, particularly during highway driving. This is due to the engine running more efficiently. However, the primary benefit of a CAI is increased performance, not fuel economy.

By understanding the benefits, choosing the right intake, and considering the real-world experiences of other G37 owners, you can make an informed decision about whether a cold air intake is right for you. Happy modifying!