Looking to boost your LML Duramax’s performance? A cold air intake is often one of the first upgrades diesel owners consider. These systems promise better airflow, which can lead to improved horsepower and fuel economy. But with so many options out there, finding the right one can be tough. I’ve done the research and rounded up some top contenders to help you decide which cold air intake is best for your truck.
Product Overview / Quick Summary
- S&B Filters 75-5070 Cold Air Intake Kit: High-performance filter, enclosed box, easy installation.
- AFE Power 54-72112D Momentum HD Cold Air Intake System: Oiled filter, large filter surface area, dyno-tested gains.
- K&N 63-3082 Aircharger Performance Air Intake System: Washable filter, lifetime warranty, improved throttle response.
- Banks Power 42185 Ram-Air Cold Air Intake System: Enclosed housing, larger filter, optimized airflow.
- Spectre Performance 9900 Air Intake Kit: Budget-friendly, simple design, improves sound.
Top 5 Best Cold Air Intakes for LML Duramax
S&B Filters 75-5070 Cold Air Intake Kit
The S&B Filters 75-5070 is a popular choice for LML Duramax owners wanting improved airflow and filtration. It features an enclosed airbox to protect the filter from engine heat and debris. Installation is relatively straightforward, making it a good option for DIYers.
Pros:
- ✅ Excellent filtration efficiency.
- ✅ Enclosed airbox reduces heat soak.
- ✅ Easy to install with detailed instructions.
Cons:
- ❌ Can be slightly more expensive than some competitors.
- ❌ Some users have reported minor fitment issues.
- ❌ Filter requires periodic cleaning and oiling.
Verdict: This is a solid all-around choice for Duramax owners seeking a balance of performance, protection, and ease of installation.
AFE Power 54-72112D Momentum HD Cold Air Intake System
AFE Power is known for its high-quality performance parts, and the 54-72112D Momentum HD Cold Air Intake System is no exception. This system uses a large, oiled filter to maximize airflow and filtration. The intake tube is designed to minimize restrictions and improve throttle response.
Pros:
- ✅ Noticeable increase in horsepower and torque.
- ✅ High-quality oiled filter for superior filtration.
- ✅ Improved throttle response and acceleration.
Cons:
- ❌ Oiled filter requires careful maintenance.
- ❌ Higher price point compared to other options.
- ❌ Installation may be more complex for some users.
Verdict: If you’re looking for maximum performance gains and don’t mind the extra maintenance of an oiled filter, the AFE Power Momentum HD is a great choice.
K&N 63-3082 Aircharger Performance Air Intake System
K&N is a well-known name in air filtration, and their 63-3082 Aircharger Performance Air Intake System is designed to improve airflow and performance for your LML Duramax. This system features a washable and reusable filter, which can save you money in the long run. Plus, it comes with a lifetime warranty, giving you peace of mind.
Pros:
- ✅ Washable and reusable filter.
- ✅ Lifetime warranty.
- ✅ Improved throttle response.
Cons:
- ❌ Some users find the sound to be louder than expected.
- ❌ Oiled filter requires proper cleaning and oiling.
- ❌ Gains may not be as significant as some other systems.
Verdict: This is a good option for those who want a reusable filter and the peace of mind of a lifetime warranty, even if the performance gains are more modest.
Banks Power 42185 Ram-Air Cold Air Intake System
Banks Power is a reputable brand specializing in diesel performance. The 42185 Ram-Air Cold Air Intake System is designed to maximize airflow and minimize restrictions. It features an enclosed housing to protect the filter from heat and debris, and a larger filter for increased surface area.
Pros:
- ✅ Enclosed housing for better heat protection.
- ✅ Larger filter for increased airflow.
- ✅ Dyno-proven performance gains.
Cons:
- ❌ Higher price point.
- ❌ Installation may require some mechanical skill.
- ❌ Some users find the design bulky.
Verdict: If you’re serious about performance and want a system designed for maximum airflow and heat protection, the Banks Power Ram-Air is a solid investment.
Spectre Performance 9900 Air Intake Kit
If you’re on a budget, the Spectre Performance 9900 Air Intake Kit is a more affordable option. While it may not offer the same level of performance as the other systems on this list, it can still improve airflow and give your LML Duramax a more aggressive sound. The design is fairly simple, making installation relatively easy.
Pros:
- ✅ Budget-friendly price.
- ✅ Simple design for easy installation.
- ✅ Improves engine sound.
Cons:
- ❌ Performance gains may be minimal.
- ❌ Filter quality may not be as high as other brands.
- ❌ Not enclosed, so it’s more susceptible to heat soak.
Verdict: This is a good choice for those looking for a budget-friendly upgrade that improves sound and offers a slight performance boost.
Buying Guide
Choosing the right cold air intake for your LML Duramax involves considering a few key factors. Here’s what to keep in mind:
- Filtration: A good filter is essential for protecting your engine from dust and debris. Consider the filter’s material (cotton gauze, synthetic) and its filtration efficiency.
- Airflow: Look for systems designed to maximize airflow while minimizing restrictions. Larger intake tubes and less restrictive filters can improve performance.
- Heat Protection: An enclosed airbox can help prevent hot engine air from entering the intake, which can reduce performance.
- Installation: Consider your mechanical skills and choose a system that you can install yourself or have installed professionally.
- Maintenance: Oiled filters require regular cleaning and oiling, while dry filters are typically easier to maintain.
- Price: Cold air intakes range in price from budget-friendly options to high-end systems. Determine your budget and choose a system that offers the best value for your money.
- Brand Reputation: Research different brands and read reviews to get an idea of their reputation for quality and performance.
FAQs
Will a cold air intake void my warranty?
It depends. Installing a cold air intake *could* potentially void your warranty if the dealer can prove that the intake caused a specific problem. However, the Magnuson-Moss Warranty Act protects consumers from blanket warranty denials. It’s best to check with your dealer beforehand.
How much horsepower will a cold air intake add?
Horsepower gains vary depending on the intake system and your truck’s modifications. Generally, you can expect to see gains of around 10-20 horsepower. However, the biggest benefit is often improved throttle response and overall engine performance.
Are oiled or dry filters better?
Both types have their pros and cons. Oiled filters generally offer better filtration and airflow, but require more maintenance. Dry filters are easier to maintain but may not filter as well or flow as much air.
Can I install a cold air intake myself?
Many cold air intakes are designed for DIY installation. However, it depends on your mechanical skills and the specific system. Read the instructions carefully and make sure you have the necessary tools before starting.
Conclusion
Upgrading to a cold air intake is a great way to improve your LML Duramax’s performance and fuel economy. By considering the factors outlined in this article and choosing a system that meets your needs and budget, you can enjoy the benefits of increased airflow and a more responsive engine. Just remember to do your research and choose a reputable brand that offers quality products and good customer support.
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