Does your Duramax L5P engine sometimes feel like it’s holding back? You probably want your truck to perform its best, and that starts with giving its engine the air it needs. But when you start looking for a cold air intake for your L5P, it can feel like a maze. So many brands, so many claims – it’s tough to know which one will truly make a difference and which ones are just hype.
Choosing the wrong intake can mean wasted money or even a system that doesn’t work as well as you hoped. You want a system that breathes in cooler, denser air to help your engine run smoother, sound better, and maybe even save a little on fuel. This can be confusing, and that’s exactly why we’re here to help. We understand the frustration of sifting through all the technical jargon and marketing promises.
In this post, we’re going to break down what makes a great L5P cold air intake. We’ll explore what to look for, common pitfalls to avoid, and how to pick the system that will give your truck the performance boost you’re looking for. Get ready to learn how to make your L5P engine breathe easier and perform at its peak.
Our Top 5 L5P Cold Air Intake Recommendations at a Glance
Top 5 L5P Cold Air Intake Detailed Reviews
1. Banks Power – 17-19 Chevy/GMC 2500 L5P 6.6L Ram-Air Intake System (42249)
Rating: 9.4/10
Are you looking to give your 2017-2019 Chevy or GMC 2500 with the L5P 6.6L Duramax engine a serious upgrade? The Banks Power Ram-Air Intake System (42249) is designed to do just that! This system replaces your truck’s restrictive stock intake with a high-performance setup that lets your engine breathe easier.
What We Like:
- Increased Airflow: This system lets more cool, dense air into your engine. More air means your engine can make more power and perform better.
- Excellent Filtration: It uses a high-flow, low-restriction filter. This filter traps dirt and debris effectively, protecting your engine.
- Longer Service Life: The filter is washable and reusable. You can clean it and use it again, saving you money over time.
- Ram-Air Design: The Ram-Air design channels cool outside air directly to the filter. This cooler air is denser and helps boost performance.
What Could Be Improved:
- Installation Complexity: Some users found the installation to be a bit challenging. Following the instructions carefully is important.
- Cost: It’s an investment, and the price might be higher than other basic upgrades.
Overall, the Banks Power Ram-Air Intake System offers a significant performance boost and better engine protection for your truck. It’s a worthwhile upgrade for those seeking more power and efficiency.
2. Injen Technology – Evolution Roto-Molded Air Intake System (EVO7007)
Rating: 9.0/10
Want to give your 2017-2019 GMC Sierra or Chevrolet Silverado Duramax a boost? The Injen Technology Evolution Roto-Molded Air Intake System (EVO7007) is here to help. This system is designed to fit perfectly and is proven to add serious power. You’ll notice a more aggressive sound when you step on the gas. Plus, it looks great under the hood.
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What We Like:
- Dyno-proven gains of up to 34 horsepower and 76 lb-ft of torque.
- It’s designed to work with your truck’s original computer settings.
- It makes a cool, aggressive intake sound when you accelerate.
- The housing and tube are made from strong, roto-molded polyethylene.
- A Clear-View badge lets you easily check the air filter.
- Uses tough silicone couplers and a serviceable SuperNano-Web dry air filter.
- Comes with stainless steel clamps that protect your hoses.
- It looks tough and fits like the original parts.
- Built with pride in Pomona, California, USA.
- Backed by Injen Technology’s Limited Lifetime Warranty.
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What Could Be Improved:
- This product is not legal for sale or use in California.
This Injen intake system offers a significant performance upgrade and a more exciting driving experience for your Duramax truck. It’s a smart choice for those seeking more power and a better sound.
3. Boosted Performance Duramax L5P Performance Cold Air Intake System Chevy Silverado/GMC Sierra 6.6L Diesel 2500/3500HD (2017-2019) Increase WHP
Rating: 8.9/10
Unleash the hidden power in your Duramax L5P! This Boosted Performance Cold Air Intake System is designed specifically for your 2017-2019 Chevy Silverado or GMC Sierra 2500/3500HD. Get ready for more horsepower, torque, and even better gas mileage.
What We Like:
- Massive Airflow Boost: Experience over 50% more airflow than your stock intake. This means your engine gets denser, cooler air, leading to quicker turbo spool and overall better performance.
- Noticeable Power Gains: Expect an increase of 15-20 horsepower and 40 lb-ft of torque. This upgrade optimizes your engine’s efficiency and removes restrictions.
- Improved Drivability: Enjoy faster turbo spool, a more responsive throttle, and a satisfying growl from your 6.6L diesel.
- Better Fuel Economy: The improved air density can lead to 1-2 MPG increases by helping your turbocharger work more efficiently.
- High-Quality Construction: Made with USA-sourced filters and durable, mandrel-bent aluminum piping. The wrinkle black coating helps keep intake air temperatures down.
- Easy Installation: This is a direct bolt-on system. No extra parts or modifications are needed for a simple plug-and-play installation.
- Perfect Fitment: Specifically designed for 2017-2019 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L Duramax L5P engine.
What Could Be Improved:
- The blue filter color, while stylish, might not match everyone’s aesthetic preference.
This cold air intake is a fantastic upgrade for Duramax L5P owners seeking more power and efficiency. It’s an easy way to get more out of your truck.
4. K&N Cold Air Intake System: High-Flow Air Filter
Rating: 8.8/10
Want to give your 2017-2019 Chevy Silverado or GMC Sierra a boost? The K&N Cold Air Intake System (77-3101KP) is designed to do just that. It lets your engine breathe better, potentially giving you more power and a cooler engine sound.
What We Like:
- GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N promises more power and torque.
- DYNO TESTING YOU CAN TRUST: They provide proof of performance gains with dyno test reports.
- IMPROVED ENGINE SOUND – HEAR THE GROWL: Your truck will sound sportier when you accelerate.
- BETTER TOWING: It can help with acceleration and uphill performance when towing.
- PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: It won’t void your warranty and comes with a great lifetime warranty.
- HIGH-FLOW REUSABLE AIR FILTER: The filter cleans your air and only needs washing every 100,000 miles.
- EASY TO INSTALL: Most people can install it in under an hour with basic tools.
- MADE IN THE USA: It’s built in the USA and has customer support here.
What Could Be Improved:
- While K&N guarantees performance increases, the actual gains can vary depending on your specific truck and driving conditions.
- The initial cost of a cold air intake system can be higher than a standard replacement filter.
This K&N Cold Air Intake System offers a compelling upgrade for your truck. It’s a solid option if you’re looking for improved performance and a more aggressive engine sound.
5. Rough Country Cold Air Intake for 17-19 Chevy/GMC 2500/3500HD 6.6L – 10478
Rating: 9.1/10
Want your Chevy or GMC 2500/3500HD truck to perform better? This Rough Country Cold Air Intake is designed to do just that for 2017-2019 models with the 6.6L engine. It’s a smart upgrade for any truck owner looking for more power and a quicker response from their engine.
What We Like:
- Gain increased horsepower and throttle response. Your truck will feel more powerful and react faster when you press the gas pedal.
- Circulates cooler air which is denser and produces increase in power by bringing more oxygen into the combustion chamber. Cooler air is better for your engine. It helps it burn fuel more efficiently, giving you a boost in power.
- Premium, reusable air filter. You get a high-quality filter that you can clean and use again. This saves you money in the long run.
- Easy at Home Installation and Support Provided by RC. You can install it yourself without needing special tools. Rough Country also offers support if you run into any problems.
- Backed by Rough Country’s Limited Lifetime Replacement Warranty. This means Rough Country stands behind their product. If something goes wrong, they will replace it.
What Could Be Improved:
- While installation is easy, some users might want more detailed visual guides.
- The increased power might be more noticeable on certain driving conditions than others.
This Rough Country Cold Air Intake is a solid choice for upgrading your truck’s performance. It offers a good balance of power gains, ease of use, and reliable support.
Your L5P Cold Air Intake Buying Guide
Thinking about upgrading your L5P Duramax engine? A cold air intake is a popular choice. It can help your truck breathe better, potentially giving you more power and better fuel economy. But with so many options out there, how do you pick the right one? This guide will help you make a smart decision.
Key Features to Look For
When you’re shopping for an L5P cold air intake, keep these important features in mind:
- Improved Airflow: The main goal is to let more cool air into your engine. Look for systems with larger diameter tubing and less restrictive air filters. This is like giving your engine a bigger straw to drink from.
- Heat Shielding: Your engine bay gets hot. A good cold air intake will have a box or shield to keep the hot air away from the filter. This is crucial because cooler air is denser and better for performance.
- Filter Type: You’ll see different filter types. High-flow, reusable filters are common. They can be washed and reused, saving you money over time. Paper filters are cheaper but need to be replaced.
- Ease of Installation: Some kits are designed for a simple bolt-on process. Others might require more advanced tools or knowledge. Check reviews for installation tips and difficulty.
- Sound: Cold air intakes can change the sound of your engine. Many owners like the deeper, more aggressive intake sound. Some systems are quieter than others.
Important Materials
The materials used in a cold air intake can affect its performance and how long it lasts.
- Tubing: Most intake tubes are made from high-quality plastic or aluminum.
- Plastic: Often lighter and can help insulate against engine heat. Some plastics are very durable.
- Aluminum: Can be polished for looks and is very strong. It can sometimes transfer engine heat more readily.
- Air Filter: The filter itself is usually made with a cotton gauze or synthetic material.
- Cotton Gauze: Offers great airflow and can be oiled for better filtration. It needs to be cleaned and re-oiled.
- Synthetic: Often dry filters that don’t require oil. They are easy to maintain and still provide good filtration.
- Heat Shield: Typically made from plastic or metal, this part is designed to block hot engine air.
Factors That Improve or Reduce Quality
Several things can make a cold air intake better or worse for your L5P.
- Design and Engineering: A well-designed intake system will have smooth bends in the tubing. This allows air to flow without much resistance. Poorly designed intakes can actually hurt performance.
- Seal and Fitment: A good intake will seal tightly against the heat shield and engine bay. This ensures that only cool outside air is being drawn in. A leaky system will pull in hot air, reducing its effectiveness.
- Filtration Efficiency: While you want good airflow, you also need to protect your engine. The filter needs to effectively trap dirt and debris. Some filters sacrifice filtration for airflow, which can be bad for your engine in the long run.
- Durability: The materials should be strong and able to withstand the heat and vibrations in the engine bay. A cheap intake might crack or break over time.
User Experience and Use Cases
Most L5P owners who install cold air intakes report positive experiences.
- Performance Gains: Many notice a slight increase in horsepower and torque. This can make towing feel easier and acceleration quicker.
- Fuel Economy: Some drivers report improved MPG, especially when driving smoothly. This is because the engine can breathe more efficiently.
- Engine Sound: The more aggressive intake sound is a big plus for many. It adds a sporty feel to the truck.
- Towing and Hauling: A cold air intake can be especially beneficial when towing heavy loads or in hot weather. The cooler, denser air helps the engine perform better under stress.
- Daily Driving: Even for everyday driving, you might notice a more responsive throttle and a nicer engine note.
L5P Cold Air Intake FAQs
Q: What is a cold air intake?
A: A cold air intake is a part that replaces your truck’s stock air intake system. It’s designed to bring cooler, denser air into the engine. Cooler air helps the engine make more power.
Q: Will a cold air intake give me a lot more horsepower?
A: You’ll likely see a small to moderate increase in horsepower and torque. It’s not a massive jump, but it can make a noticeable difference, especially when combined with other upgrades.
Q: Is it hard to install a cold air intake on my L5P?
A: Most cold air intakes are designed for a relatively easy bolt-on installation. Many people can do it themselves with basic tools. However, if you’re not comfortable working on your truck, it’s best to have a professional install it.
Q: Do I need to tune my truck after installing a cold air intake?
A: For most L5P cold air intakes, a tune is not strictly required. However, some people choose to get a tune to maximize the benefits of the intake and other modifications.
Q: Will a cold air intake void my warranty?
A: This can be a tricky question. While a cold air intake itself usually doesn’t void your entire warranty, if a problem arises that can be directly linked to the intake, the manufacturer might deny a warranty claim for that specific issue.
Q: What’s the difference between a dry and oiled air filter?
A: Dry filters don’t need oil to work. They are easier to clean and maintain. Oiled filters use a special oil on the filter material to trap dirt. They can offer excellent filtration but require re-oiling after cleaning.
Q: Can a cold air intake improve my fuel economy?
A: Yes, some drivers report better fuel economy. When the engine breathes more easily and efficiently, it can use fuel more effectively.
Q: Will a cold air intake make my truck louder?
A: Yes, most cold air intakes will make your engine sound a bit louder and deeper, especially when you accelerate. Many people enjoy this sound.
Q: How often do I need to clean or replace the air filter?
A: This depends on the filter type and how dusty your driving conditions are. Reusable filters should be cleaned every 15,000-30,000 miles, or sooner if they look dirty. Paper filters need to be replaced according to the manufacturer’s recommendations.
Q: Are there any downsides to installing a cold air intake?
A: The main potential downsides are cost, the possibility of voiding a warranty if a problem occurs due to the intake, and the slight increase in engine noise. Also, if not installed correctly or if the filter isn’t properly maintained, it could potentially let in dirt.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
My name is Carlos Gadd, and I am the creator of AirPurityGuide.com.. With a passion for footwear, I share my experiences, insights, and expertise about shoes. Through my blog, I aim to guide readers in making informed decisions, finding the perfect pair, and enhancing their footwear knowledge. Join me on this journey to explore everything about shoes!