So, you're looking to boost the performance of your 2021 Lexus IS350 F Sport? One of the most popular and effective upgrades is installing a new intake system. Let's dive into everything you need to know about upgrading the intake on your Lexus IS350 F Sport, covering the benefits, different types of intakes, what to look for when buying, and some installation tips.

Why Upgrade Your Intake?

First off, why even bother upgrading your intake? What's the big deal? Well, the factory intake systems on most cars, including the Lexus IS350, are designed with a few key priorities in mind: cost-effectiveness, noise reduction, and adequate filtration. Performance usually isn't at the top of the list. Aftermarket intakes, on the other hand, are engineered to maximize airflow to the engine. This can lead to several improvements:

• Increased Horsepower and Torque: By allowing the engine to breathe more freely, an aftermarket intake can unlock hidden horsepower and torque. The engine can pull in more air. More air with proper fuel mixture equals bigger combustion and more power.
• Improved Throttle Response: A less restrictive intake can make your throttle feel more responsive and immediate. Giving you a more engaging driving experience. Basically, the car feels quicker off the line and when accelerating.
• Enhanced Engine Sound: Let's be honest, who doesn't love a good engine note? Aftermarket intakes often amplify the engine's sound, giving it a more aggressive and sporty tone. This adds to the overall driving pleasure and makes your car sound as good as it looks.
• Better Fuel Efficiency (Potentially): While not always guaranteed, some drivers report a slight improvement in fuel efficiency after installing an aftermarket intake. This is because the engine can operate more efficiently with a better airflow. It is worth noticing that fuel efficiency depends on driving habits, so your mileage may vary.

Types of Intakes for the IS350 F Sport

When it comes to aftermarket intakes, you'll generally find two main types:

Short Ram Intakes (SRI)

Short Ram Intakes, or SRIs, replace the factory airbox with a shorter intake tube and a high-flow air filter that sits directly in the engine bay. Here’s what you need to know about them:

• Pros: SRIs are typically easier to install and less expensive than cold air intakes. They also tend to provide a more noticeable increase in engine sound.
• Cons: Since they draw air from within the engine bay, SRIs can suck in hotter air, which can reduce performance, especially in hot weather. The hot air is less dense than cold air, so the engine gets less oxygen per volume of air. This can counteract some of the benefits of the increased airflow.

Cold Air Intakes (CAI)

Cold Air Intakes, or CAIs, are designed to draw air from outside the engine bay, usually from the fender well or behind the front bumper. This allows them to pull in cooler, denser air.

• Pros: CAIs generally offer better performance gains compared to SRIs because they provide a cooler air charge. Cooler air means more oxygen, which results in more efficient combustion and more power.
• Cons: CAIs are usually more expensive and more difficult to install than SRIs. There's also a risk of hydro-lock if the intake sucks in water, although this is rare with most modern CAI designs. Hydro-lock can cause serious engine damage, so it's something to be aware of.

What to Look for When Buying an Intake

Alright, so you're ready to buy an intake. Here are some key factors to consider:

• Compatibility: This should be obvious, but make sure the intake is specifically designed for your 2021 Lexus IS350 F Sport. Check the product description carefully to confirm compatibility.
• Filter Type: Air filters are typically made from oiled cotton or synthetic materials. Oiled cotton filters generally offer better filtration but require regular cleaning and re-oiling. Synthetic filters are easier to maintain but may not filter as effectively. Choose the type that best suits your needs and maintenance preferences.
• Material and Build Quality: Look for intakes made from high-quality materials like aluminum or carbon fiber. These materials are durable, lightweight, and can withstand the heat and vibrations of the engine bay. The build quality should be solid, with precise welds and a good fit and finish.
• Brand Reputation: Stick with reputable brands that have a proven track record of producing high-quality intakes. Some popular brands for Lexus vehicles include K&N, AEM, Injen, and Takeda. Reading reviews and doing some research can help you make an informed decision.
• Price: Intakes can range in price from a couple of hundred dollars to over $500. Set a budget and compare different options within that range. Keep in mind that you often get what you pay for, so it may be worth investing a bit more for a higher-quality intake.

Top Intake Recommendations for Your IS350 F Sport

Here are a few popular choices that owners often consider:

• K&N 69-8700TTK Performance Air Intake System: K&N is a well-known brand. This intake provides good gains and a sporty sound.
• Injen SP1371BLK Short Ram Air Intake System: This is a popular short ram option. It offers easy installation and noticeable sound improvements.
• Takeda Attack Cold Air Intake System: Takeda intakes are known for their quality and performance. Offering excellent filtration and airflow.

Installation Tips

Installing an intake can be a DIY project, but it requires some mechanical knowledge and the right tools. Here are some tips to help you through the process:

1. Read the Instructions: Always read the installation instructions carefully before you start. This will give you a clear understanding of the steps involved and any potential challenges.
2. Gather Your Tools: Make sure you have all the necessary tools, including screwdrivers, sockets, wrenches, and pliers. Having the right tools will make the job much easier and prevent you from damaging any parts.
3. Disconnect the Battery: Before you start working on the intake, disconnect the negative battery terminal to prevent any electrical issues.
4. Remove the Factory Intake: Carefully remove the factory airbox and intake tube. Pay attention to any sensors or hoses that need to be disconnected. It's a good idea to take pictures as you go, so you have a reference for reassembly.
5. Install the New Intake: Follow the instructions to install the new intake. Make sure all connections are secure and that the filter is properly seated.
6. Reconnect Sensors and Hoses: Reconnect any sensors or hoses that were disconnected during the removal process.
7. Double-Check Everything: Before you start the engine, double-check all connections and make sure everything is properly installed. Loose connections can cause leaks and other problems.
8. Start the Engine: Once you're satisfied that everything is properly installed, reconnect the battery and start the engine. Listen for any unusual noises and check for leaks.

Potential Issues and Considerations

While intake upgrades are generally straightforward, there are a few potential issues to keep in mind:

• Check Engine Lights: In some cases, installing an aftermarket intake can trigger a check engine light. This is usually due to changes in airflow that the ECU (Engine Control Unit) detects. You may need to reset the ECU or install a fuel management system to resolve this issue.
• Warranty Concerns: Installing an aftermarket intake may void certain parts of your vehicle's warranty. Check with your dealer or warranty provider to understand the potential impact on your warranty coverage.
• Hydro-Lock (CAI): As mentioned earlier, there's a risk of hydro-lock with cold air intakes if water gets sucked into the engine. Avoid driving through deep puddles or flooded areas to minimize this risk. Some CAIs come with bypass valves that can help prevent hydro-lock.

Final Thoughts

Upgrading the intake on your 2021 Lexus IS350 F Sport is a great way to improve performance, enhance engine sound, and add a bit of excitement to your driving experience. By understanding the different types of intakes, knowing what to look for when buying, and following proper installation procedures, you can enjoy the benefits of an aftermarket intake without any major headaches. So, go ahead, give your IS350 F Sport the breath of fresh air it deserves! Just make sure to do your research and choose an intake that fits your needs and budget.