Ever notice how your 5.7 Hemi sometimes feels a little…sluggish? It might be that Multi-Displacement System (MDS) kicking in. While it’s supposed to save fuel, a lot of folks find it hurts performance and even causes annoying vibrations. That’s where an MDS delete kit comes in. These kits let you disable the MDS and unlock the full potential of your engine. I’ve been digging into the best options out there, and I’m sharing my top picks to help you make the right choice.
Product Overview / Quick Summary
- MDS Delete Kits: Disable the Multi-Displacement System (MDS) in 5.7L Hemi engines.
- Benefits: Improved throttle response, smoother operation, potential for increased horsepower, and elimination of MDS-related issues.
- Considerations: Requires tuning, may affect fuel economy, and careful installation is crucial.
- Top Picks: Range from basic kits to comprehensive packages including tuners and other performance parts.
Top 5 Best MDS Delete Kit 5.7 Hemi Reviews
1. MMX Performance MDS Delete Kit
The MMX Performance MDS Delete Kit is a comprehensive solution designed to eliminate the MDS system in your 5.7L Hemi. It stands out because of its quality components and the inclusion of everything you need for a complete installation. This kit is popular among enthusiasts looking for a reliable and effective way to improve their engine’s performance.
Pros:
- ✅ High-quality components ensure durability and reliability.
- ✅ Includes all necessary parts for a complete installation, reducing the need for additional purchases.
- ✅ Noticeable improvement in throttle response and overall engine performance.
Cons:
- ❌ Can be more expensive than other basic kits on the market.
- ❌ Installation might require some mechanical expertise or professional help.
- ❌ Tuning is mandatory after installation, adding to the overall cost.
Verdict: This is a great option for those looking for a complete and reliable MDS delete solution, even if it comes at a slightly higher price. It’s best suited for those who want a comprehensive upgrade and are willing to invest in professional tuning.
2. Comp Cams MDS Delete Kit
The Comp Cams MDS Delete Kit is a well-regarded option from a reputable brand known for its performance camshafts and valvetrain components. This kit is designed to provide a solid foundation for eliminating the MDS system, improving engine responsiveness, and potentially increasing horsepower. It’s a favorite among performance enthusiasts who trust the Comp Cams brand.
Pros:
- ✅ Comp Cams is a trusted brand in the performance aftermarket industry.
- ✅ Designed for optimal performance and reliability.
- ✅ Helps improve throttle response and eliminate MDS-related issues.
Cons:
- ❌ Does not include a tuner, which is essential for proper operation after installation.
- ❌ May require additional parts, depending on your specific needs and goals.
- ❌ Installation can be complex and might necessitate professional assistance.
Verdict: The Comp Cams kit is a solid choice if you’re already familiar with performance modifications and trust the brand. It’s best for those who are comfortable with tuning and don’t mind sourcing the necessary tuner separately.
3. Mopar MDS Delete Kit
The Mopar MDS Delete Kit offers a factory-backed solution for disabling the MDS system in your 5.7L Hemi. Being a Mopar product, it ensures compatibility and reliability, giving you peace of mind. This kit appeals to those who prefer OEM parts and want a seamless integration with their vehicle.
Pros:
- ✅ Guaranteed compatibility with 5.7L Hemi engines.
- ✅ Mopar’s reputation for quality and reliability.
- ✅ May maintain the vehicle’s factory warranty (check with your dealer).
Cons:
- ❌ Typically more expensive than aftermarket options.
- ❌ Might not offer the same performance gains as some aftermarket kits.
- ❌ Tuning is still required after installation.
Verdict: If you prioritize OEM parts and want the reassurance of a Mopar product, this kit is a good choice. It’s ideal for those who value compatibility and reliability over maximum performance gains.
4. SR Speedworx MDS Delete Kit
The SR Speedworx MDS Delete Kit is designed as an affordable option to eliminate the MDS system in your 5.7L Hemi without breaking the bank. It provides a straightforward solution for improving engine performance and getting rid of those annoying MDS vibrations. This kit is great for budget-conscious enthusiasts who still want to see a noticeable improvement.
Pros:
- ✅ More affordable compared to other kits on the market.
- ✅ Simple and straightforward installation process.
- ✅ Improves throttle response and eliminates MDS-related issues.
Cons:
- ❌ May not include the same high-quality components as more expensive kits.
- ❌ Tuning is still required and not included.
- ❌ Longevity might be a concern compared to premium kits.
Verdict: This is a budget-friendly option for those who want to disable MDS without spending a fortune. It’s best suited for those who are comfortable with basic mechanical work and don’t need the absolute best components.
5. Inertia Motorsports MDS Delete Kit
The Inertia Motorsports MDS Delete Kit is a performance-oriented solution designed to not only eliminate the MDS system but also enhance the overall power output of your 5.7L Hemi. This kit often includes performance camshafts and other upgrades that work together to deliver a significant boost in horsepower and torque. It’s a great choice for those looking for a complete performance upgrade.
Pros:
- ✅ Offers significant performance gains in addition to MDS delete.
- ✅ Includes high-quality components designed for performance.
- ✅ Comprehensive kit for a complete engine upgrade.
Cons:
- ❌ The most expensive option, due to the inclusion of performance parts.
- ❌ Requires professional installation and tuning due to the complexity of the upgrade.
- ❌ May not be suitable for those looking for a simple MDS delete solution.
Verdict: If you’re aiming for a substantial performance increase and are willing to invest in a comprehensive upgrade, the Inertia Motorsports kit is an excellent choice. It’s best for those who want to maximize their engine’s potential and are prepared for professional installation and tuning.
Buying Guide
Choosing the right MDS delete kit for your 5.7 Hemi involves a few key considerations. First, think about your budget. Kits range from basic, affordable options to comprehensive, high-performance packages. Next, consider your mechanical skill level. Some kits are easier to install than others, and some might require professional help. Don’t forget about tuning. An MDS delete always requires a tune to run properly. Factor that cost into your budget. Finally, think about your goals. Are you just trying to get rid of the MDS, or are you looking for a performance boost too? Knowing your goals will help you narrow down your options.
Here’s a quick checklist:
- Budget: How much are you willing to spend?
- Skill Level: Can you install it yourself, or do you need a professional?
- Tuning: Have you factored in the cost of a tune?
- Performance Goals: Are you looking for more than just an MDS delete?
- Component Quality: Research the brands and materials used in the kit.
FAQs
Q: Will an MDS delete improve my gas mileage?
A: Not likely. The MDS system is designed to improve fuel economy. Deleting it will probably result in slightly lower gas mileage, especially during highway driving.
Q: Is an MDS delete difficult to install?
A: It depends on the kit and your mechanical skills. Some kits are relatively straightforward, while others require more advanced knowledge and tools. If you’re not comfortable working on engines, it’s best to have a professional install it.
Q: Do I need a tuner after installing an MDS delete kit?
A: Yes, absolutely. A tuner is essential to disable the MDS in the ECU and optimize engine performance after the delete. Without a tune, your engine won’t run correctly.
Q: Will an MDS delete void my warranty?
A: Potentially, yes. Modifying your engine can void parts of your factory warranty. Check with your dealer before installing an MDS delete kit.
Conclusion
Choosing the best MDS delete kit for your 5.7 Hemi depends on your specific needs, budget, and goals. Whether you’re looking for a budget-friendly option, a factory-backed solution, or a complete performance upgrade, there’s a kit out there for you. Just remember to consider all the factors, do your research, and get professional help if needed. With the right kit and proper installation, you can unlock the full potential of your Hemi and enjoy a smoother, more responsive driving experience.
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