Getting the right turbo for your 5.9 Cummins can seriously wake up your truck. A stock turbo is okay, but if you’re towing heavy loads, craving more power, or just want better throttle response, an upgrade is a game-changer. Finding the perfect match isn’t always easy, though. There are tons of options, and wading through the specs can be confusing. I’ve spent hours researching and even helped a few buddies swap out their turbos, so I’ve got some insights to share.
Here’s a quick look at our top picks:
- BorgWarner S366SXE: Best all-around performance.
- BD Diesel Screamer Turbo: Excellent for daily driving and light towing.
- ATS Aurora 3000 Turbo: Great for quick spool-up and responsiveness.
- Garrett GT3788R Turbo: Premium choice for high horsepower builds.
- Holset HE351CW Turbo: Budget-friendly, reliable upgrade.
Top 5 Best Turbo For A 5.9 Cummins Reviews
1. BorgWarner S366SXE
The BorgWarner S366SXE is a popular choice for 5.9 Cummins owners looking for a significant power boost. It’s known for its robust design and ability to support higher horsepower levels without sacrificing reliability. This turbo offers a great balance between performance and durability.
Pros:
- ✅ Excellent for high horsepower applications (up to 650hp).
- ✅ Durable construction for long-lasting performance.
- ✅ Improved airflow for better engine efficiency.
Cons:
- ❌ May require supporting modifications (injectors, fuel pump).
- ❌ Slightly slower spool-up compared to smaller turbos.
- ❌ Can be a bit noisy for some users.
Verdict: The BorgWarner S366SXE is a fantastic choice for those aiming for serious horsepower gains and don’t mind making other supporting modifications. It’s a reliable workhorse that can handle demanding conditions.
2. BD Diesel Screamer Turbo
The BD Diesel Screamer Turbo is designed to improve throttle response and overall drivability. It’s a drop-in replacement turbo, making installation relatively straightforward. This turbo is ideal for daily driving and light to moderate towing applications.
Pros:
- ✅ Quick spool-up for improved throttle response.
- ✅ Drop-in replacement for easy installation.
- ✅ Enhanced performance for daily driving and light towing.
Cons:
- ❌ Not ideal for extreme horsepower builds.
- ❌ May not provide as much top-end power as larger turbos.
- ❌ Can be pricier than other entry-level options.
Verdict: If you want a noticeable improvement in daily driving performance and don’t need massive horsepower, the BD Diesel Screamer Turbo is a solid choice. It’s easy to install and provides a significant boost in responsiveness.
3. ATS Aurora 3000 Turbo
The ATS Aurora 3000 Turbo is engineered for quick spool-up and enhanced low-end torque. It’s a great option for those who want improved towing performance and better overall responsiveness. This turbo is known for its reliability and durable construction.
Pros:
- ✅ Excellent spool-up for improved low-end torque.
- ✅ Durable construction for long-lasting performance.
- ✅ Enhanced towing capabilities.
Cons:
- ❌ May not support extremely high horsepower levels.
- ❌ Can be louder than stock turbos.
- ❌ Requires careful tuning for optimal performance.
Verdict: The ATS Aurora 3000 Turbo is a great choice for truck owners who frequently tow and want a reliable turbo that delivers improved low-end power and responsiveness. It’s a well-rounded option for various applications.
4. Garrett GT3788R Turbo
The Garrett GT3788R Turbo is a premium option designed for high-performance applications. It features a ball-bearing design, which reduces friction and improves spool-up. This turbo is ideal for those seeking maximum power and performance from their 5.9 Cummins.
Pros:
- ✅ Ball-bearing design for quicker spool-up and reduced friction.
- ✅ Supports high horsepower levels.
- ✅ Premium construction for enhanced durability.
Cons:
- ❌ Higher price point compared to other options.
- ❌ May require extensive modifications for optimal performance.
- ❌ Not ideal for those on a tight budget.
Verdict: If you’re building a high-horsepower 5.9 Cummins and demand the best in performance and reliability, the Garrett GT3788R Turbo is an excellent choice. It’s a premium turbo that delivers exceptional results.
5. Holset HE351CW Turbo
The Holset HE351CW Turbo is a budget-friendly option that provides a noticeable improvement over the stock turbo. It’s a popular choice for those looking for a reliable and cost-effective upgrade. This turbo offers a good balance of performance and affordability.
Pros:
- ✅ Affordable and budget-friendly.
- ✅ Reliable and durable.
- ✅ Provides a noticeable improvement over the stock turbo.
Cons:
- ❌ May not support extremely high horsepower levels.
- ❌ Can be prone to surging in some applications.
- ❌ Not as efficient as newer turbo designs.
Verdict: For those on a budget who want a reliable and noticeable upgrade over the stock turbo, the Holset HE351CW Turbo is a great option. It offers good performance for the price and is a popular choice among 5.9 Cummins owners.
Buying Guide
Choosing the right turbo for your 5.9 Cummins involves considering a few key factors. Here’s what you should keep in mind:
- Horsepower Goals: How much power are you aiming for? Different turbos support different horsepower levels. Be realistic about your goals and choose a turbo that can handle the power you want to achieve.
- Driving Style: How do you use your truck? If you primarily use it for daily driving and light towing, a smaller turbo with quick spool-up is ideal. If you’re towing heavy loads or racing, you’ll need a larger turbo that can support higher horsepower.
- Budget: Turbos range in price from a few hundred dollars to several thousand. Set a budget and stick to it. Remember to factor in the cost of supporting modifications, such as injectors, fuel pumps, and tuning.
- Supporting Modifications: Upgrading your turbo often requires other modifications to ensure optimal performance and reliability. Consider upgrading your injectors, fuel pump, and exhaust system. Proper tuning is also essential to get the most out of your new turbo.
- Installation: Are you comfortable installing the turbo yourself, or will you need to hire a professional? Some turbos are drop-in replacements, making installation relatively easy. Others require more extensive modifications and are best left to experienced mechanics.
FAQs
Q: What size turbo is best for towing with a 5.9 Cummins?
A: For towing, you’ll want a turbo that spools up quickly to provide good low-end torque. A smaller to mid-sized turbo like the ATS Aurora 3000 or BD Diesel Screamer is a good choice. These turbos provide improved throttle response and towing performance without sacrificing drivability.
Q: Do I need to upgrade my injectors when I upgrade my turbo?
A: It depends on your horsepower goals. If you’re aiming for significant power gains, upgrading your injectors is highly recommended. Larger injectors can provide the additional fuel needed to support the increased airflow from the turbo. If you’re only looking for a mild upgrade, you may be able to get away with stock injectors, but it’s always best to consult with a diesel performance specialist.
Q: How much does it cost to install a turbo on a 5.9 Cummins?
A: The cost of installation can vary depending on the complexity of the job and the hourly rate of the mechanic. A simple drop-in turbo replacement might cost a few hundred dollars, while a more involved installation with supporting modifications could cost several thousand. Get quotes from multiple shops to ensure you’re getting a fair price.
Q: Will a new turbo improve my fuel economy?
A: A properly sized and tuned turbo can potentially improve your fuel economy, especially when towing. An efficient turbo can help the engine run more efficiently, reducing fuel consumption. However, if you’re constantly using the extra power, your fuel economy may decrease. It really depends on your driving habits.
Conclusion
Upgrading the turbo on your 5.9 Cummins can dramatically improve its performance and drivability. Whether you’re looking for better towing capabilities, increased horsepower, or improved throttle response, there’s a turbo out there that’s perfect for your needs. Consider your goals, budget, and driving style when making your decision. And don’t forget to factor in the cost of supporting modifications and professional tuning to get the most out of your new turbo. Happy upgrading!
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