Ultimate Guide: 5 Best Mds Delete Kit 5.7 Hemi Today
The 5.7 Hemi engine, a powerhouse in many Dodge, Ram, Jeep, and Chrysler vehicles, is known for its robust performance. However, a common point of contention for many owners is the Multi-Displacement System (MDS). While designed to improve fuel economy by deactivating cylinders during light-load driving, the MDS often leads to notorious issues like lifter tick, premature camshaft wear, and overall inconsistent engine feel. For enthusiasts and daily drivers alike seeking enhanced reliability, improved performance, and a smoother driving experience, an MDS delete kit for the 5.7 Hemi is often the ultimate solution. These kits typically replace the MDS-enabled components with non-MDS equivalents, permanently eliminating cylinder deactivation and restoring a consistent V8 operation. Choosing the best MDS delete kit 5.7 Hemi involves considering various factors such as component quality, completeness of the kit, vehicle compatibility, and ease of installation. Our comprehensive guide and reviews below will help you navigate the options and select the ideal solution to unleash the full potential of your Hemi engine, transforming it into a more reliable and responsive beast on the road.
Our Top 5 Best Mds Delete Kit 5.7 Hemi Reviews – Expert Tested & Recommended
1. GELUOXI 5.7 HEMI Engine Camshaft Lifter Kit Non MDS Replacement
The GELUOXI 5.7 HEMI Engine Camshaft Lifter Kit stands out as our top pick for a comprehensive non-MDS replacement. This kit is specifically engineered for 2009-2017 5.7L Hemi engines found in popular models like the Dodge Durango, Charger, Challenger, Jeep Grand Cherokee, and Chrysler 300. It provides all the essential components needed to effectively perform an MDS delete, ensuring your Hemi runs smoothly and reliably without the common lifter issues associated with the MDS system. The package includes a high-quality camshaft (part# 53022372AA), a full set of non-MDS lifters, and a complete head gasket set, making it a robust solution for a full engine overhaul or a targeted MDS disable.
Key Features That Stand Out
- ✓ Complete Non-MDS Conversion: Includes camshaft and all necessary non-MDS lifters for a full system replacement.
- ✓ Broad Vehicle Compatibility: Designed for a wide range of 2009-2017 5.7L Hemi vehicles, including Dodge, Jeep, and Chrysler models.
- ✓ Quality Components: Features Camshaft part# 53022372AA and a comprehensive set of non-MDS lifters (various OEM numbers provided).
- ✓ Includes Head Gasket Set: Offers additional value by including crucial head gaskets for a complete cylinder head refresh during installation.
- ✓ Heavy-Duty Construction: Weighing in at 28 pounds, this kit is built with durable components designed for longevity.
Why We Recommend It
We recommend the GELUOXI kit as the best MDS delete kit 5.7 Hemi because of its comprehensive nature and targeted solution for common Hemi engine problems. It’s a direct aftermarket replacement that addresses the root cause of MDS-related lifter and camshaft wear. The inclusion of a full head gasket set is a significant advantage, saving you from purchasing additional components for the job. This kit is a strong choice for anyone looking for a reliable and complete package to bring their 5.7 Hemi back to optimal health and performance, eliminating the dreaded MDS lifter tick for good. Customers have reported getting their vehicles “back up and running” successfully with this kit.
Performance Analysis
Based on the provided data and customer feedback, the GELUOXI kit performs as advertised by allowing the Hemi engine to operate without the MDS. This results in consistent eight-cylinder operation, which typically leads to a smoother idle, more linear power delivery, and the elimination of the intermittent shudder or noise associated with cylinder deactivation. While detailed performance metrics aren’t provided, the sheer act of converting to non-MDS operation is widely known to improve engine longevity and stability for the 5.7L Hemi. The quality of components, as suggested by its weight and detailed part numbers, implies robust construction for reliable long-term use.
Best For
This GELUOXI MDS delete kit is best for owners of 2009-2017 Dodge, Jeep, and Chrysler 5.7L Hemi vehicles who are experiencing MDS-related issues like lifter noise or camshaft wear, or those proactively seeking to prevent such problems. It’s an excellent choice for a complete engine refresh or a thorough MDS disable project, especially given the inclusion of the head gasket set, which simplifies the overall undertaking. If you want a complete, ready-to-install solution that covers all critical components for a successful MDS delete, this is your go-to kit.
Our Expert Opinion
From an expert perspective, the GELUOXI non-MDS camshaft and lifter kit is a standout. The fact that it includes a head gasket set makes it a highly practical and cost-effective solution for anyone undertaking this significant engine work. The specific part numbers listed for both camshaft and lifters indicate a well-researched and compatible design for the specified Hemi applications. While customer reviews are limited, the single positive feedback confirms its effectiveness in getting a vehicle back on the road. This kit offers the promise of enhanced engine reliability and sustained performance, making it a solid investment for any 5.7 Hemi owner.
2. 5.7L Engine MDS HEMI Lifters Cam Timing Chain Kit & Oil Pan Gasket Overhaul Kit
The TREXCAR 5.7L Engine MDS HEMI Lifters Cam Timing Chain Kit & Oil Pan Gasket Overhaul Kit is our Editor’s Choice for those looking for an extremely comprehensive package. This kit goes beyond just the MDS delete components, offering a full engine overhaul solution for 2009-2018 Dodge Ram 1500 5.7L Hemi V8 vehicles. It’s designed to not only eliminate the MDS system but also to refresh crucial engine components often replaced during a significant engine service. The extensive list of parts ensures that when you dive into your engine, you have virtually everything needed to restore it to prime condition, addressing common wear points simultaneously with your Hemi MDS delete.
Key Features That Stand Out
- ✓ Ultimate Overhaul Kit: Includes camshaft, 16 valve tappets (lifters), cylinder head gaskets, oil pan and bearing seat, timing chain and tensioner, full overhaul kit, 5.7L exhaust pipe bolts, and even gloves.
- ✓ Extensive Fitment: Compatible with various Dodge Ram 1500 5.7L V8 models from 2009-2020 (VIN: T for earlier models), covering a broad range of years.
- ✓ OEM Part Numbers Reference: Components are cross-referenced with various OEM numbers (e.g., Camshaft-53022263AF, Valve tappet-53021728AE*2, 53021726AE*2, Chain-53022316AC) for assured compatibility.
- ✓ 12-Month Warranty: Manufacturer offers a substantial warranty period for peace of mind.
- ✓ High-Quality Appearance: Customers note that “Everything looks quality” and parts “feel high quality right out of the box.”
Why We Recommend It
This kit is our Editor’s Choice due to its unparalleled completeness. For mechanics or experienced DIYers tackling a 5.7 Hemi MDS delete, this kit provides almost every component you’d want to replace during a top-end engine tear-down. This not only saves time sourcing individual parts but also ensures compatibility and fresh components for a reliable rebuild. Customer feedback highlights that it’s a “perfect kit” that “completely transforms the way a Ram runs,” eliminating the “dreaded lifter tick” and restoring “smooth power.” Its extensive nature makes it an ideal choice for anyone looking for a comprehensive engine refresh alongside their MDS disable.
Performance Analysis
Customers have reported a significant improvement in engine operation after installing this kit. It’s credited with bringing back “smooth power” and eliminating “lifter tick,” transforming how a Ram runs. The inclusion of new timing chain components, along with the non-MDS cam and lifters, means that not only is the problematic MDS gone, but critical wear items like the timing chain and tensioner are also renewed. This contributes to improved engine response and overall longevity. However, one customer noted issues with the water pump temp sensor hole threading, a rock-hard front main seal, and incorrect intake gaskets. While these are significant drawbacks for that specific user, the overall sentiment points to the lifters pumping up correctly and the kit being effective in its primary goal of MDS deletion and engine revival.
Best For
The TREXCAR overhaul kit is best for 2009-2018 Dodge Ram 1500 5.7L Hemi V8 owners who are not just looking to perform an MDS delete, but are planning a comprehensive engine top-end overhaul. If your vehicle has high mileage, is showing signs of general wear (beyond just MDS issues), or if you simply want to refresh multiple critical components while you have the engine apart, this kit is an excellent, all-inclusive solution. It’s particularly suited for those who appreciate having “everything you need in one well packaged box” and are prepared to handle potential minor fitting issues that sometimes occur with aftermarket kits.
Our Expert Opinion
This kit presents an ambitious and largely successful approach to a 5.7 Hemi MDS delete and engine refresh. The sheer volume of components included makes it incredibly convenient for a full overhaul, minimizing the need for multiple orders. The positive feedback about improved engine performance and elimination of lifter tick is compelling. However, the reported issues with gasket fitment and manufacturing defects (water pump sensor hole, front main seal) are serious and warrant careful inspection of all components prior to installation. While the concept and comprehensiveness are excellent, potential buyers should be prepared for due diligence to ensure all parts are up to standard. The 12-month warranty does provide some reassurance against these potential issues, making it a strong contender despite these minor reported hiccups.
3. 201-300-17 Camshaft and 5038784AD Lifters MDS Delete 5.7L Hemi Kit
For those looking for an affordable yet effective solution for their MDS delete 5.7L Hemi, the JaoRop 201-300-17 Camshaft and Lifters Kit is an excellent choice. This kit focuses on the core components necessary for a successful non-MDS conversion: the camshaft and lifters. It boasts wide compatibility across numerous 5.7L Hemi vehicles from 2009-2019, including Dodge Ram, Challenger, Charger, Durango, Chrysler 300, Aspen, and Jeep Commander/Grand Cherokee. Crafted from premium materials, this kit is designed to provide excellent strength, wear resistance, and long-term durability, ensuring your engine runs smoothly and efficiently after the MDS disable.
Key Features That Stand Out
- ✓ Essential MDS Delete Components: Includes the critical camshaft (201-300-17) and lifters (5038784AD) for non-MDS conversion.
- ✓ Extensive Hemi Compatibility: Fits a broad range of Chrysler, Dodge, and Jeep 5.7L Hemi V8 models from 2009-2019, covering AWD and RWD.
- ✓ High-Quality Construction: Precision-machined from premium materials for superior strength, wear resistance, and durability.
- ✓ Optimized Design: Engineered to deliver reliable valve timing and improved engine response post-MDS delete.
- ✓ 1-Year Warranty & 24/7 Support: Manufacturer offers excellent after-sales service and technical support.
Why We Recommend It
We’ve chosen this JaoRop kit as the Best Budget MDS Delete Kit because it provides the core components for an effective non-MDS conversion without unnecessary extras, keeping the cost down. Its wide compatibility makes it a versatile option for many Hemi owners. The emphasis on “precision-machined” and “premium materials” suggests a commitment to quality, which is crucial for internal engine components. For those who are comfortable sourcing their own gaskets and other ancillary parts, or who only need the camshaft and lifters, this kit offers excellent value and performance for an MDS disable.
Performance Analysis
While specific customer reviews are not available for direct performance feedback, the product description highlights an “optimized design” aimed at delivering “reliable valve timing and improved engine response.” By replacing the MDS-specific camshaft and lifters with non-MDS equivalents, this kit is expected to eliminate the cylinder deactivation system, leading to a consistent V8 sound, smoother power delivery, and eradication of the common MDS lifter issues. The quality of materials (precision-machined premium materials) further suggests a durable and reliable performance outcome, contributing to the overall longevity and efficiency of the 5.7 Hemi engine.
Best For
This MDS delete kit is best for budget-conscious owners of a wide range of 2009-2019 Chrysler, Dodge, and Jeep 5.7L Hemi vehicles who are primarily focused on replacing the MDS-related camshaft and lifters. It’s ideal if you already have access to other necessary gaskets and bolts, or if you prefer to purchase those separately based on your specific engine’s needs. If you want a cost-effective way to get rid of MDS lifter tick and improve engine reliability without a full overhaul kit, this is a strong contender.
Our Expert Opinion
The JaoRop MDS delete kit offers a compelling package for its price point. It wisely focuses on the essential components (camshaft and lifters) that directly address the MDS problem. The stated commitment to high-quality materials and an optimized design is encouraging, promising a durable fix for Hemi MDS issues. The generous 1-year warranty and 24/7 after-sales service are significant advantages, providing peace of mind, especially for a budget-friendly option. While customer experiences are not provided, the manufacturer’s claims of improved engine function and durability make it a respectable choice for a targeted 5.7 Hemi non-MDS conversion.
4. NON MDS HEMI Engine Camshaft Lifter Kit w/Head Gasket Set & Bolts
The Riveterium NON MDS HEMI Engine Camshaft Lifter Kit offers a comprehensive approach to tackling MDS-related issues in your 5.7L Hemi. This kit is designed to provide all the essential components for a complete non-MDS conversion, focusing on vehicles like the Chrysler Aspen (2009), Dodge Durango (2009), and Ram 1500 (2009-2015). Beyond just the camshaft and lifters, it includes critical head gasket sets and bolts, ensuring that a full top-end refresh can be performed effectively, addressing potential leaks and wear points encountered during the MDS delete process. This is a practical solution for those seeking a one-stop-shop for their Hemi engine’s health.
Key Features That Stand Out
- ✓ Full Non-MDS Conversion: Comes with 1 non-MDS camshaft and 16 non-MDS lifters.
- ✓ Includes Head Gasket Set & Bolts: Provides essential components for a full cylinder head reassembly, including head gasket set (HS54418B, HS54418, L5701K-16, HB228) and a head bolt set.
- ✓ Additional Gaskets: Also includes a timing cover gasket (TCS46049) for a more complete seal.
- ✓ Lifter Retainers Included: Comes with 4 lifter retainers, an often overlooked but necessary component.
- ✓ 1-Year Warranty: Manufacturer stands by their product with a substantial warranty period.
Why We Recommend It
We recommend the Riveterium kit for its well-rounded package, which significantly eases the burden of sourcing multiple parts for an MDS delete and top-end refresh. The inclusion of the head gasket set, head bolts, and timing cover gasket means you’re well-equipped for a thorough job, saving time and potential compatibility headaches. This kit focuses on the critical elements for a reliable non-MDS Hemi conversion, aiming to eliminate the notorious lifter tick and improve engine longevity. The manufacturer provides a 1-year warranty, which adds confidence in the quality and durability of the components.
Performance Analysis
Based on the components provided, this kit is designed to fully convert a 5.7L Hemi engine from MDS to non-MDS operation. The replacement of the MDS camshaft and lifters with non-MDS specific components ensures that cylinder deactivation is permanently disabled. This typically results in a consistent V8 exhaust note, smoother power delivery, and a reduction in the stress placed on MDS lifters, which are prone to failure. The inclusion of new gaskets and head bolts is crucial for maintaining proper compression and preventing leaks after the engine is reassembled, contributing to overall engine reliability and performance post-MDS delete. While direct customer feedback on performance is not available, the completeness of the kit suggests a robust solution for enhancing engine longevity.
Best For
This MDS delete kit is an excellent choice for owners of specific 2009-2015 5.7L Hemi vehicles (Chrysler Aspen, Dodge Durango, Ram 1500) who are seeking a more extensive solution than just a camshaft and lifter replacement. It’s ideal for those undertaking a significant engine repair where cylinder heads will be removed, as it provides most of the necessary gaskets and hardware for reassembly. If you want a kit that provides a strong foundation for a reliable non-MDS Hemi build and don’t want to hunt for individual gaskets and bolts, this is a solid option.
Our Expert Opinion
The Riveterium NON MDS HEMI Engine Camshaft Lifter Kit is a thoughtfully assembled package. The inclusion of lifter retainers alongside the camshaft, lifters, head gaskets, and head bolts speaks to a thorough understanding of what’s required for a successful MDS delete and engine reassembly. The specific OEM part numbers referenced for the components further suggests a focus on direct fitment and performance. The 1-year warranty is a valuable assurance for buyers. For Hemi owners within the specified vehicle range looking for a comprehensive kit to address MDS issues and refresh their engine’s top end, this product presents a compelling and reliable choice.
5. Non MDS 5.7 HEMI Lifters Camshaft Oil Pan Kit w/Timing Chain Head Gasket Water Plug Kit
The TREXCAR Non MDS 5.7 HEMI Lifters Camshaft Oil Pan Kit is another incredibly comprehensive option for those seeking a full engine overhaul alongside their MDS delete. This kit is tailored specifically for 2009-2018 Dodge Ram 1500 V8 5.7L vehicles, offering a vast array of components to address not only the problematic MDS system but also many other wear items critical to engine health. From the camshaft and lifters to the timing chain set, oil pan, head gaskets, and even exhaust pipe bolts, this package aims to provide a near-complete refresh, ensuring your Hemi runs like new, free from the issues of the Multi-Displacement System.
Key Features That Stand Out
- ✓ Extremely Comprehensive Kit: Includes camshaft, 5.7L exhaust pipe bolts, overhaul kit, 4 sets of valve tappets, timing chain set, oil pan, oil seal and sealing ring, 4 water plugs, and even gloves.
- ✓ Specific Ram 1500 Fitment: Designed for 2009-2020 Dodge Ram 1500 Hemi 5.7L V8 models (VIN: T for earlier years), ensuring precise compatibility.
- ✓ OE Standard Quality: Components are tested for a perfect fit and fully factory tested to meet or exceed OE standards for reliability and durability.
- ✓ Direct Replacement Design: Original size design ensures a perfect fit and direct replacement, simplifying installation.
- ✓ All-Inclusive for Engine Refresh: Addresses many points of wear, making it suitable for a full engine refresh alongside the MDS delete.
Why We Recommend It
This TREXCAR kit is highly recommended for its all-encompassing nature, making it one of the most complete MDS delete kits for the 5.7 Hemi if you own a Dodge Ram 1500. It doesn’t just eliminate the MDS; it sets you up for a thorough engine rejuvenation. Customers have praised this kit for its “quality” appearance and for “completely transforming the way a Ram runs,” bringing back “smooth power” and eliminating “lifter tick.” If you’re undertaking a major engine service and want to replace as many wear items as possible while performing your Hemi MDS delete, this kit minimizes the hassle of sourcing individual parts and offers a holistic solution.
Performance Analysis
Customer feedback indicates a positive performance outcome, with users reporting that the kit “definitely helped” their engine, bringing back “smooth power” and eradicating the “dreaded lifter tick.” By converting to a non-MDS cam and lifter setup and including a new timing chain set, the engine’s operation becomes more consistent and reliable. The direct replacement design and adherence to OE standards suggest that components will fit correctly and perform efficiently. However, similar to another TREXCAR kit, one customer reported issues with a non-threaded water pump temp sensor hole, a hard front main seal that leaked, and incorrect intake gaskets. While the core lifters were reported to work, buyers should thoroughly inspect all components before installation to mitigate these potential fitting challenges. The primary function of MDS deletion and engine noise reduction seems well-achieved.
Best For
This comprehensive MDS delete kit is best for owners of 2009-2018 Dodge Ram 1500 5.7L Hemi V8 trucks who are planning an extensive engine rebuild or are dealing with multiple engine issues beyond just MDS. If you’re prepared to strip down a significant portion of your engine and want to install all new, high-quality components to ensure long-term reliability and peak performance, this kit provides an unmatched level of completeness. It’s ideal for those seeking a total refresh and the permanent elimination of the Multi-Displacement System.
Our Expert Opinion
From an expert standpoint, the TREXCAR Non MDS 5.7 HEMI Lifters Camshaft Oil Pan Kit is an impressive offering, particularly for its sheer scope. The breadth of included components covers almost every aspect of a serious Hemi engine refresh, making it a powerful choice for those aiming for maximum reliability and performance after an MDS delete. The positive customer experiences regarding engine transformation are highly encouraging. However, the recurring feedback about minor but critical fitting issues (gaskets, seals, threaded holes) from some users cannot be overlooked. While the kit’s core functionality in eliminating MDS is praised, careful pre-installation inspection of all parts is crucial. Despite these minor inconsistencies, its overall value as a comprehensive overhaul kit for the 5.7 Hemi MDS delete is undeniable.
Complete Buying Guide for Best Mds Delete Kit 5.7 Hemi
Choosing the best MDS delete kit for your 5.7 Hemi can be a daunting task with so many options available. An MDS delete is a significant modification that involves delving deep into your engine, so making an informed decision is paramount. This buying guide will walk you through the essential factors to consider, helping you select a kit that ensures reliability, performance, and peace of mind.
Essential Factors We Consider
When evaluating an MDS delete kit 5.7 Hemi, several key elements must be taken into account to ensure a successful and long-lasting modification:
- ✓ Vehicle Compatibility: This is the absolute first step. 5.7 Hemi engines have evolved over the years, with subtle differences between model years (e.g., 2009-2010 vs. 2011+). Ensure the kit explicitly states compatibility with your vehicle’s specific make, model, and year. Double-check OEM part numbers if provided, especially for the camshaft and lifters.
- ✓ Completeness of the Kit: MDS delete kits can range from basic (camshaft and lifters) to comprehensive overhaul packages. Consider what you need:
- ✓ Camshaft & Lifters: These are the core components. You absolutely need a non-MDS camshaft and a full set of non-MDS lifters.
- ✓ Gaskets & Seals: Replacing head gaskets, timing cover gaskets, and oil pan gaskets is crucial whenever you open the engine. Kits that include these save time and ensure proper sealing.
- ✓ Head Bolts: Often, head bolts are “torque-to-yield” and should be replaced after removal. Kits with new head bolts are a plus.
- ✓ Timing Chain Components: If your engine has high mileage, replacing the timing chain, tensioner, and guides while you’re in there is highly recommended for long-term reliability.
A more comprehensive kit generally means fewer individual purchases and better compatibility, though it might cost more upfront.
- ✓ Component Quality & Materials: Since these are internal engine components, quality is non-negotiable. Look for kits made from robust materials (e.g., precision-machined steel for camshafts, high-quality alloys for lifters). Brands that emphasize OE standards or better are preferred. Poor quality components can lead to premature failure and costly repairs down the line.
- ✓ Brand Reputation & Support: Research the manufacturer. Brands with positive reviews, good customer service, and solid warranties (1 year or more is ideal) offer greater peace of mind. While some newer or lesser-known brands can offer value, established names often have a proven track record.
- ✓ Installation Difficulty: An MDS delete is not a beginner-friendly DIY project. It requires significant mechanical aptitude and specialized tools. Even with a complete kit, professional installation might be necessary. Some kits might include minor fitment issues, as noted in reviews, which can add complexity to the installation.
- ✓ Tuning Requirements: After an MDS delete, you will almost certainly need a custom tune for your engine’s computer (PCM). This disables the MDS fault codes and optimizes engine performance for non-MDS operation. Ensure you factor in the cost and availability of a tuner/tuning service.
Budget Planning
The cost of an MDS delete kit 5.7 Hemi can vary significantly based on its completeness and brand. A basic camshaft and lifter kit might start around $300-$500, while a full overhaul kit with timing components, gaskets, and bolts can easily reach $700-$1000+. Remember, this is just the cost of parts. You also need to budget for:
- ✓ Ancillary Parts: If your chosen kit isn’t comprehensive, you’ll need to purchase additional gaskets, seals, and fluids (oil, coolant) separately.
- ✓ Tools: You might need specialized tools like a valve spring compressor, harmonic balancer puller, and torque wrenches.
- ✓ Tuning: A custom PCM tune is almost always required and can cost an additional $300-$600, depending on whether you send your PCM out or purchase a handheld tuner.
- ✓ Labor: If you’re not doing it yourself, professional installation can add $1000-$2000+ to the total cost due to the labor-intensive nature of the job.
While the initial outlay might seem substantial, consider the long-term benefits: potentially avoiding costly future repairs from failed MDS components, improving engine longevity, and enjoying a more consistent, responsive Hemi performance. Think of it as an investment in your vehicle’s health and your driving enjoyment.
Final Thoughts
An MDS delete kit 5.7 Hemi is an excellent upgrade for many Hemi owners seeking to enhance their engine’s reliability and performance. By carefully considering your vehicle’s specific needs, the completeness and quality of the kit, and your budget for both parts and potential labor/tuning, you can make an informed decision. Prioritize quality and compatibility above all else, as this is a modification you want to do right the first time. Whether you choose a minimalist kit or a full overhaul package, successfully performing an MDS delete can truly unlock the full potential of your Hemi, providing years of trouble-free and enjoyable driving.
Frequently Asked Questions
Q: What is MDS and why do Hemi owners delete it?
A: MDS stands for Multi-Displacement System, a technology developed by Chrysler (now Stellantis) to improve fuel economy in their Hemi V8 engines. It works by deactivating four cylinders during light-load cruising, effectively turning the V8 into a V4. However, the system is notorious for causing issues such as “lifter tick,” premature camshaft wear, and inconsistent engine performance. Hemi owners often delete the MDS to eliminate these problems, improve engine reliability, gain consistent V8 power delivery, and achieve a more predictable exhaust note.
Q: What are the main benefits of an MDS delete for a 5.7 Hemi?
A: The primary benefits of an MDS delete include: 1. Elimination of Lifter Tick: This is a common and often costly issue caused by the MDS lifters. 2. Improved Engine Reliability: Removing the problematic MDS components can prevent premature wear on the camshaft and lifters. 3. Consistent Performance: The engine operates consistently on all eight cylinders, leading to smoother power delivery and throttle response. 4. Better Exhaust Sound: You get a continuous V8 rumble without the awkward transition to V4 mode. 5. Potential for Performance Gains: While not a direct power adder, a non-MDS cam allows for more aggressive camshaft profiles, and a tune can optimize performance.
Q: Will deleting MDS affect my 5.7 Hemi’s fuel economy?
A: Yes, deleting the MDS will typically lead to a slight decrease in fuel economy. The MDS system was designed specifically to save fuel by deactivating cylinders during light cruising. Without this system, your engine will always run on eight cylinders, consuming more fuel. Most owners who perform an MDS delete are willing to accept this trade-off for increased reliability and performance.
Q: What components are typically included in an MDS delete kit?
A: A basic MDS delete kit 5.7 Hemi will always include a new non-MDS specific camshaft and a full set of non-MDS lifters (16 of them). More comprehensive kits may also include: head gaskets, cylinder head bolts, timing chain, timing chain tensioner, timing guides, oil pan gasket, valve cover gaskets, and other seals or small parts needed for a complete engine overhaul.
Q: Is an MDS delete a DIY project or does it require professional installation?
A: An MDS delete is a complex and labor-intensive procedure that involves disassembling a significant portion of the top end of the engine. It requires specialized tools, precise torque specifications, and a good understanding of engine mechanics. For most DIYers, especially those without extensive engine building experience, professional installation is highly recommended to ensure the job is done correctly and to avoid costly mistakes. If done incorrectly, it can lead to severe engine damage.
Q: Do I need a tune after installing an MDS delete kit?
A: Yes, a custom tune for your engine’s Powertrain Control Module (PCM) is almost always necessary after an MDS delete. Without a tune, the PCM will still try to activate the now-removed MDS components, potentially triggering check engine lights, fault codes, and leading to incorrect fuel/air mixtures or limp mode. A tune will permanently disable the MDS function in the PCM and optimize engine parameters for non-MDS operation, ensuring proper performance and no error codes.
Eliminating the problematic Multi-Displacement System from your 5.7 Hemi can be one of the most rewarding modifications you make, transforming your vehicle’s reliability and driving dynamics. We hope this comprehensive guide to the best MDS delete kit 5.7 Hemi has equipped you with the knowledge to make an informed decision. Whether you prioritize a complete overhaul or a budget-friendly solution, remember that quality and compatibility are paramount. Invest wisely in your Hemi’s future and enjoy the consistent V8 power it was always meant to deliver. Ready to banish the lifter tick and unleash your engine’s true potential? Click on the “Check Price on Amazon” buttons below our recommended products to find the perfect kit for your ride today!
