Hey there, car enthusiasts! Are you looking to boost the performance and sound of your 2021 Lexus IS 350 F Sport? Upgrading your car's intake system is a fantastic way to achieve just that. In this comprehensive guide, we'll dive into everything you need to know about upgrading the intake on your 2021 Lexus IS 350 F Sport. We'll cover the benefits, factors to consider, top product recommendations, installation tips, and more. So, buckle up and let's get started!

Why Upgrade Your Lexus IS 350 F Sport Intake?

So, you might be wondering, why should I even bother upgrading my intake system? Well, guys, there are several compelling reasons to consider this modification for your Lexus IS 350 F Sport. The intake system is responsible for drawing air into the engine, which is then mixed with fuel for combustion. Upgrading the intake can improve airflow, leading to increased horsepower, torque, and throttle response. Who wouldn't want that, right?

Improved Horsepower and Torque:

One of the most noticeable benefits of an aftermarket intake system is the potential increase in horsepower and torque. A well-designed intake allows the engine to breathe more efficiently, resulting in a more powerful combustion process. This can translate to quicker acceleration, improved passing power, and an overall more engaging driving experience. The key here is efficient airflow. When your engine can get more air, it can burn more fuel, and that equals more power. Many enthusiasts report noticeable gains, especially when combined with other performance modifications like exhaust systems and ECU tunes. However, it's not just about raw power; the way the power is delivered can also be improved, making the car feel more responsive and eager to accelerate. For the 2021 Lexus IS 350 F Sport, known for its sporty character, this enhancement can make a significant difference in how the car feels on the road.

Enhanced Throttle Response:

Upgrading your intake can also lead to a sharper and more responsive throttle. With a less restrictive intake, the engine can react more quickly to changes in throttle input. This means that when you put your foot down, the car will respond almost instantaneously. This responsiveness makes the car feel more alive and connected to the driver. The improved throttle response can be particularly noticeable in daily driving situations, such as merging onto the highway or navigating through city traffic. It makes the car feel more agile and easier to control. This enhancement is especially valuable for a sports sedan like the IS 350 F Sport, where a direct and immediate connection between the driver's input and the car's response is highly desirable.

Aggressive Engine Sound:

For many enthusiasts, the enhanced engine sound is a major draw. Stock intake systems are often designed to be quiet, but an aftermarket intake can unleash a more aggressive and sporty sound. You'll hear a more pronounced intake roar, especially under heavy acceleration. This sound can add a whole new dimension to the driving experience, making every drive feel more exciting. The sound is often described as a deep, throaty growl that adds character to the car. It's not just about being louder; it's about having a more engaging and visceral auditory experience. For those who appreciate the sound of a performance engine, this upgrade is a must-have.

Improved Fuel Efficiency (Potentially):

While performance gains are the primary focus, some aftermarket intakes can also improve fuel efficiency. By allowing the engine to breathe more easily, the engine doesn't have to work as hard to draw in air. This can lead to a slight improvement in MPG, especially during highway cruising. While the fuel efficiency gains may not be dramatic, they can be a nice bonus, especially for those who drive long distances. However, it's important to note that driving habits play a significant role in fuel efficiency, so your mileage may vary. The key is to maintain a smooth and consistent driving style to maximize any potential fuel savings.

Factors to Consider Before Buying

Before you rush out and buy the first intake you see, let's take a moment to consider some important factors. Not all intakes are created equal, and it's essential to choose one that's right for your needs and preferences.

Intake Type (Cold Air vs. Short Ram):

There are two main types of aftermarket intakes: cold air intakes (CAI) and short ram intakes (SRI). Cold air intakes are designed to draw air from outside the engine bay, where it's cooler. Cooler air is denser, which means it contains more oxygen, leading to better combustion and more power. CAIs typically place the air filter lower in the engine bay, often near the wheel well. This can provide significant performance gains, but it also carries the risk of water ingestion if you drive through deep puddles. On the other hand, short ram intakes place the air filter directly on the throttle body inside the engine bay. SRIs are easier to install and less prone to water ingestion, but they draw in warmer air, which can reduce their performance benefits. The choice between CAI and SRI depends on your driving conditions and performance goals. If you prioritize maximum power and don't drive in areas with frequent flooding, a CAI may be the better option. If you want ease of installation and don't want to worry about water ingestion, an SRI may be more suitable.

Filter Type (Oiled vs. Dry):

The air filter is a critical component of any intake system. Oiled filters use a thin layer of oil to trap dirt and debris. They offer excellent filtration and can be cleaned and reused, making them a cost-effective option in the long run. However, they require regular maintenance to ensure they're properly oiled. Over-oiling can damage the MAF sensor, while under-oiling can reduce filtration effectiveness. Dry filters, on the other hand, use a synthetic material to trap dirt. They're easier to maintain since they don't require oiling, but they may not offer the same level of filtration as oiled filters. Dry filters are a good choice for those who want a low-maintenance option, while oiled filters are better for those who prioritize maximum filtration and performance.

Material and Build Quality:

The material and build quality of the intake system can affect its performance and durability. Look for intakes made from high-quality materials like aluminum or carbon fiber. These materials are lightweight, strong, and resistant to heat. The construction should be solid, with smooth welds and tight connections. Avoid intakes made from cheap plastic or thin metal, as they may not hold up well under the stresses of daily driving. A well-built intake will not only perform better but also last longer, making it a worthwhile investment.

Installation and Fitment:

Before buying an intake, make sure it's designed specifically for your 2021 Lexus IS 350 F Sport. Check the product description to ensure proper fitment. Some intakes are designed to be direct bolt-on replacements, while others may require some modification. Consider your skill level and comfort with DIY projects. If you're not confident in your ability to install the intake yourself, it's best to have it professionally installed. Also, read reviews from other owners to see if they had any issues with the installation process. A well-designed intake should be easy to install with basic hand tools and clear instructions.

CARB EO Number (for California residents):

If you live in California, it's essential to choose an intake that's CARB (California Air Resources Board) compliant. CARB-compliant intakes have been tested and approved for use in California and have an Executive Order (EO) number. This number ensures that the intake meets the state's strict emissions standards. Using a non-CARB-compliant intake can result in a failed smog check, which can prevent you from registering your vehicle. Always check the product description to see if the intake has a CARB EO number before making a purchase.

Top Intake Recommendations for Your IS 350 F Sport

Alright, let's get to the fun part: choosing the right intake for your Lexus IS 350 F Sport. Here are a few top recommendations based on performance, quality, and value:

1. AEM Cold Air Intake System: AEM is a well-known brand in the aftermarket intake industry, and their cold air intake system for the Lexus IS 350 F Sport is a top performer. It features a mandrel-bent aluminum tube, a high-flow AEM Dryflow air filter, and a heat shield to protect the filter from engine heat. This intake is designed to deliver maximum horsepower and torque gains while maintaining excellent filtration. It's also CARB-exempt, making it legal in all 50 states. Installation is relatively straightforward, and the included instructions are clear and easy to follow. The AEM intake is a great choice for those who want a balance of performance, quality, and legality.

2. Injen Short Ram Intake System: If you're looking for an easier-to-install option, the Injen short ram intake system is a great choice. It features a mandrel-bent aluminum tube, a high-flow Injen air filter, and a heat shield. While it may not offer the same peak horsepower gains as a cold air intake, it still provides a noticeable improvement in throttle response and engine sound. The Injen intake is also available in a variety of colors to match your car's aesthetics. Installation is simple and can be completed in about an hour with basic hand tools. The Injen intake is a good option for those who want a quick and easy performance upgrade.

3. Takeda Cold Air Intake System: The Takeda cold air intake system is another excellent option for the Lexus IS 350 F Sport. It features a unique filter design that maximizes airflow and filtration. The intake tube is made from lightweight polyethylene, which helps to reduce heat soak. The Takeda intake also comes with a CARB EO number, making it legal in California. Installation is a bit more involved than some other intakes, but the included instructions are detailed and easy to follow. The Takeda intake is a good choice for those who want a high-performance intake with a unique design.

Installation Tips and Tricks

So, you've got your new intake. Awesome! Now, let's talk about installation. While some intakes are easier to install than others, here are a few general tips and tricks to make the process smoother:

Gather Your Tools:

Before you start, make sure you have all the necessary tools. This typically includes a socket set, wrenches, screwdrivers, and pliers. It's also a good idea to have a shop towel or two on hand to wipe up any spills. Having the right tools will make the job much easier and prevent frustration.

Read the Instructions Carefully:

This might seem obvious, but it's essential to read the installation instructions thoroughly before you start. Pay attention to any specific warnings or cautions. Understanding the steps involved will help you avoid mistakes and ensure a successful installation.

Disconnect the Battery:

Before working on any part of your car's electrical system, it's always a good idea to disconnect the battery. This will prevent any accidental electrical shorts or shocks. Simply disconnect the negative terminal of the battery and secure it away from the battery post.

Take Your Time:

Don't rush the installation process. Take your time and be careful not to damage any parts. If you get stuck, don't be afraid to consult the instructions or watch a video online. Rushing can lead to mistakes that can be costly to fix.

Double-Check Your Work:

Once you've finished the installation, double-check all your connections to make sure everything is tight and secure. Make sure all hoses are properly connected and all clamps are tightened. This will prevent leaks and ensure that the intake performs as it should.

Maintaining Your New Intake

Once your intake is installed, it's essential to maintain it properly to ensure optimal performance and longevity. Here are a few maintenance tips:

Clean or Replace the Air Filter Regularly:

The air filter is the most critical component of the intake system, so it's essential to keep it clean. Oiled filters should be cleaned and re-oiled every 10,000 to 20,000 miles, depending on driving conditions. Dry filters can be cleaned with compressed air or a vacuum cleaner. If the filter is damaged or excessively dirty, it should be replaced.

Inspect the Intake Tube for Cracks or Leaks:

Regularly inspect the intake tube for any cracks or leaks. Cracks can allow unfiltered air to enter the engine, which can cause damage. Leaks can reduce the intake's performance. If you find any cracks or leaks, replace the intake tube immediately.

Tighten the Clamps and Connections:

Over time, the clamps and connections on the intake system can loosen due to vibration. Regularly check the clamps and connections to make sure they're tight. This will prevent leaks and ensure that the intake performs as it should.

Conclusion

So there you have it, a comprehensive guide to upgrading the intake on your 2021 Lexus IS 350 F Sport! By now, you should have a solid understanding of the benefits of an aftermarket intake, the factors to consider when choosing an intake, and the steps involved in installing and maintaining your new intake. Remember to choose an intake that's right for your needs and preferences, and don't be afraid to ask for help if you need it. With a little bit of research and effort, you can transform your IS 350 F Sport into an even more thrilling and enjoyable ride. Happy modding, guys!