Best Performance Upgrades for the 5.7 HEMI Ram 1500

There's no doubting the performance and reliability of MOPAR's flagship V8—the 5.7 HEMI. With a name that harkens back to the power-packed, industry-leading hemispherical-chambered V8s that dominated the drag strip in the 1970s, this new powerplant had big shoes to fill. 

Fortunately, the platform has earned a loyal following since its reintroduction in the early 2000s. 

Stepping out with class-leading specifications, a throaty exhaust note, and decent efficiency, the HEMI quickly drove die-hard brand loyalists—both MOPAR and otherwise—behind the wheel of a new half-ton Ram pickup. It wasn't long until enthusiasts noticed not only the impressive power fresh off the lot, but also the engine's tremendous potential with moderate bolt-on upgrades. 

And now, two decades after the engine's initial release, the 5.7 HEMI still shines as one of MOPAR's crowning achievements—a powerful, reliable engine with loads of performance potential. Even by today's standards—where turbocharged and small-displacement engines dominate—the HEMI still holds its own as a capable, naturally aspirated powerhouse. 

That said, the engine truly shines when paired with the right upgrades. In this article, our experts discuss the top performance mods for your HEMI-powered Ram 1500 pickup—from tuners and programmers to intakes and exhaust systems. With these add-ons, you'll have no trouble keeping your Ram 1500 competitive in the modern performance landscape. 

From the factory, the 5.7L HEMI V8 in the Ram 1500 puts out between 345 and 395 horsepower, depending on the model year and configuration. Torque output typically ranges from 375 to 410 lb-ft, providing the half-ton pickup with strong acceleration and solid towing capacity right out of the gate. 

While those numbers are plenty respectable, they only scratch the surface of the platform's capabilities. With the right combination of upgrades, it's not uncommon to see gains of up to 70 horsepower from bolt-ons alone—and even more if you're willing to dig deeper into the engine. 

Programmers and tuners are among the most popular performance upgrades for the 5.7 HEMI-powered Ram platform, thanks to their impressive power gains and minimally intrusive installations. 

Most programmers can be installed in under thirty minutes with minimal effort, requiring nothing more than a quick plug into your vehicle's OBD port and following along with a series of prompts. At most, installation may involve cable management and mounting a suction cup to your Ram's windshield. 

Once installed, programmers make multiple adjustments to your vehicle's factory tune, such as increasing ignition timing, changing injector pulse, and boosting fuel rail pressure. These modifications significantly improve efficiency and, therefore, performance. 

Most programmers offer additional benefits beyond performance, including DTC (diagnostic trouble code) reading, gauge monitoring, and the ability to select from different tunes to optimize your driving experience.  

RealTruck offers several tuners for the 5.7 HEMI platform—here are two of our top sellers. 

The DiabloSport Trinity 2 is a premium tuner and monitor designed for serious enthusiasts who want maximum control over their truck's performance. With its full-color touchscreen and advanced tuning capabilities, it's a powerful all-in-one solution.

Key Features: 

• Preloaded performance tunes for horsepower and torque gains

• Full-color touchscreen display

• Real-time data monitoring and logging

• Custom tuning compatibility

• Adjustable parameters (gear ratio, tire size, rev limiter)

• Reads and clears DTCs

• Wi-Fi update capability

• Performance testing features (0–60, quarter mile)

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The Superchips FlashPaq is a user-friendly tuner that delivers noticeable performance gains with minimal setup. It's ideal for drivers who want improved power and drivability without diving into detailed tuning or complex mechanical modifications. 

Key Features: 

• Easy plug-and-play installation

• Preloaded performance tunes

• Improved throttle response and shifting

• Speedometer calibration for larger tires

• Reads and clears DTCs

• Fuel economy optimization

• Adjustable settings for various parameters

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Throttle body spacers are precision-manufactured plates—typically constructed from machined billet aluminum—that are installed between your Ram's throttle body and upper intake manifold. These modifications improve performance in two primary ways:

• Lengthening the intake manifold: Throttle body spacers add volume to the intake manifold, increasing the amount of air your Ram's 5.7 HEMI inhales. More air equals stronger combustion and thus, more power. 

• Improving airflow into the intake manifold: Throttle body spacers act as a funnel, reorganizing and directing airflow into the engine. As a result, air can enter the engine more quickly and efficiently, thereby improving performance and throttle response.  

While not massive gains, most throttle body spacers net an additional 5–10 horsepower. 

RealTruck offers several throttle body spacers for the 5.7 HEMI platform—check out some of our top sellers:

Poweraid throttle body spacers are engineered to improve intake airflow dynamics, delivering better throttle response and low-end torque. CNC-bored from premium billet aluminum, Poweraid throttle body spacers deliver exceptional performance via precision manufacturing and testing. Installation is a simple bolt-on job. 

Key Features: 

• CNC-machined billet aluminum construction

• Helix-bore design for improved airflow

• Increased intake plenum volume

• Enhanced throttle response

• Simple bolt-on installation

• Durable anodized finish

• No tuning required

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aFe's Silver Bullet throttle body spacers are engineered for maximum airflow, performance, and long-term durability. Precision-machined from bullet aluminum, these spacers employ a unique serrated/spiral bore design for optimized airflow. 

Key Features: 

• Precision-machined billet aluminum

• Serrated/spiral bore design for airflow optimization

• Increase horsepower and torque

• Improved throttle response

• Corrosion-resistant finish

• Direct-fit installation with no modifications required

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One of the most popular entries on the list is the venerable aftermarket air intake, often called a "cold air intake." This modification works on the premise that more air equals more power, using oversized high-flow air filters mounted in large air boxes, smooth composite intake tubes, and a combination of heat shielding/air scoops to funnel as much cool, dense air as possible.  

On your HEMI-powered Ram 1500, aftermarket air intakes net considerable horsepower and torque gains, generally in the mid-teens. They also dress up the engine bay for sporty looks. 

RealTruck offers several air intakes for the 5.7 HEMI platform—here are our top sellers. 

S&B cold air intakes are engineered for maximum airflow and filtration, making them a top choice for performance enthusiasts. Available with your choice of dry, extendable, or reusable oiled cotton air filters, S&B gives Ram owners the option to fine-tune their intake setup to suit their needs and environment. 

Key Features: 

• High-flow reusable air filters

• Enclosed airbox design for cooler intake air

• Large-diameter intake tubes 

• Improved horsepower and torque 

• Enhanced engine sound

• Easy installation

• Vehicle-specific fitment

• Durable construction

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K&N is a leader in the aftermarket air intake industry, and its NextGen intake system is the latest evolution. Combining proven filtration technology with modern design, the K&N NextGen delivers optimal performance gains for the Ram 1500. 

Key Features: 

• High-flow oiled cotton filter

• Washable and reusable design

• Dyno-tested horsepower gains

• Improved throttle response

• Durable roto-molded intake tube

• Heat shield for cooler air

• Long service intervals

• Million-mile limited warranty (filter) 

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While airflow into the engine is essential, that's only half of the equation. After all, air can only move through the intake as fast as it can escape from the exhaust. For this reason, high-flow exhaust systems have become a common modification for Ram enthusiasts. 

Aftermarket exhaust systems typically use premium materials such as T-304 stainless steel or aluminized steel to prevent excessive corrosion. These systems also feature design enhancements to improve efficiencies, such as wider-diameter piping, high-flow mufflers and resonators, and minimal bends. 

As a bonus, most exhaust systems produce a deep, throaty tone, allowing your Ram's HEMI V8 to sing at high RPMs. 

RealTruck offers several exhaust systems for the 5.7 HEMI platform—here are some of our favorites:

The Borla ATAK exhaust system is designed for maximum sound output and performance, making it a favorite among enthusiasts. High-flow mufflers and mandrel-bent tubing promote optimal exhaust flow, while specially tuned mufflers deliver the unmistakable growl of an ATAK exhaust. 

Key Features: 

• Aggressive ATAK exhaust tone

• T-304 stainless steel construction

• Mandrel-bent tubing for optimal flow

• Increased horsepower and torque

• Bolt-on installation

• Million-mile warranty

• High-flow muffler design

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For Ram owners who want free-flowing performance with a more refined sound, the Borla S-Type exhaust system offers the best of both worlds. Premium, mandrel-bent stainless steel exhaust piping delivers superior exhaust flow and fitment, while a moderate, deep exhaust tone keeps your Ram quiet enough for street cruising. 

Key Features: 

• Moderate, deep exhaust note

• Premium stainless steel construction

• Improved exhaust flow

• Enhanced horsepower and torque

• Precision fitment

• Bolt-on installation

• Long-lasting durability

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Throttle bodies are another modification involving airflow into your Ram's intake, replacing the small-bore factory throttle body with an oversized, performance-oriented unit. As with other similar modifications on this list, throttle bodies reduce airflow restriction into the engine through the intake manifold. The larger the throttle body, the more air it draws in each time you blip the throttle, resulting in significantly better throttle response and overall power.  

Check out some of RealTruck's favorite throttle bodies for proven performance: 

aFe throttle bodies are carefully engineered for improved airflow and consistent performance gains. Whether towing, daily driving, or racing around backroads, the aFe throttle body provides the peppy acceleration and torque you need. 

Key Features: 

• Larger bore diameter for increased airflow

• Precision-machined construction

• Improved throttle response

• Direct bolt-on installation

• Durable materials

• Optimized airflow path

• No tuning required (in most cases)

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BBK throttle bodies are a proven upgrade for increasing intake airflow and engine performance. These high-quality, oversized throttle bodies are popular on high-horsepower racing applications, ensuring the engine is fed enough air for maximum efficiency. A direct-bolt-on design means no modifications on most applications—just bolt on and enjoy the gains. 

Key Features: 

• Oversized throttle bore design

• CNC-machined aluminum construction

• Increased horsepower and torque

• Enhanced throttle response

• Direct-fit installation

• High-quality components

• Made in the USA

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Your Ram's cooling system is a crucial component of its powertrain, helping the engine maintain proper operating temperatures to prevent overheating and mechanical damage. While upgrading the cooling system won't directly increase power, it's beneficial in applications that are run hard, raced, or regularly towed or hauled. 

Components like heavy-duty electric fans, multi-core radiators, and high-performance water pumps help keep internal temperatures down, promoting efficient operation under any conditions. 

RealTruck offers several cooling system upgrades for the 5.7 HEMI platform—including: 

Mishimoto radiators are designed to deliver superior cooling efficiency compared to factory units. With tig-welded aluminum construction, increased coolant capacity over stock, and direct-fit designs, these radiators help to keep your Ram cool without any serious modifications. 

Key Features: 

• Increased cooling capacity

• All-aluminum construction

• Improved heat dissipation

• Direct-fit design

• Durable welds and materials

• Ideal for high-performance applications

• Lifetime warranty

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Tired of dealing with a power-robbing mechanical fan or inefficient electric unit? Upgrade your HEMI's cooling system with a Mishimoto electric fan to improve airflow through the radiator and enhance cooling performance. 

Key Features: 

• High airflow design

• Improved cooling efficiency

• Reduced parasitic loss vs. mechanical fans

• Slim profile for easy fitment

• Durable construction

• Plug-and-play options for easy installation

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While this is a bit of an unconventional entry onto the list, a premium battery affects your Ram's performance—particularly reliability. The battery is a key component of your Ram's charging system, storing the charge provided by the alternator. When it's time to start your pickup, the battery energizes the starter, which cranks the engine. 

With a weak battery, your Ram may have difficulty starting—the alternator is also prone to failure without a proper charge, as it has to work overtime to recharge the battery's depleted cells. Installing a premium battery is solid insurance to boost the reliability of your Ram's charging system.

RealTruck offers several replacement batteries for the 5.7 HEMI platform—here's our top picks:

ODYSSEY Extreme batteries are built for high performance and long service life. With premium AGM technology for enhanced deep-cycle performance, the ODYSSEY Extreme offers fast recharge rates, long service life, and exceptional vibration and cold-weather resistance. Whether powering a tow rig or a dependable work truck, ODYSSEY Extreme batteries deliver the reliable starting power your Ram needs. 

Key Features: 

• High cranking power

• Deep-cycle capability

• Long service life

• Vibration-resistant design

• Fast recharge rates

• Maintenance-free construction

• Ideal for demanding applications

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OPTIMA YELLOWTOP batteries offer reliable starting power and deep-cycle performance. Unique SpiralCell technology offers exceptional spill and vibration resistance, making them ideal for off-road applications and unique mounting configurations. Built as a dual-purpose starting and deep-cycle battery, the OPTIMA YELLOWTOP delivers the jolt your Ram needs to turn over strong and the longevity to support years of reliable operation. 

Key Features: 

• Dual-purpose starting and deep-cycle battery

• SpiralCell technology

• Vibration resistance

• Maintenance-free design

• Long lifespan

• Consistent power output

• Ideal for vehicles with added accessories

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A: Some upgrades can impact your warranty, particularly those that alter engine tuning or emissions systems. However, not all modifications automatically void coverage—only those proven to cause a failure may be denied. It's always best to check with your dealer before installing major upgrades.

A: With basic bolt-ons like an intake, exhaust, and tuner, gains of 30–70 horsepower are common. More advanced modifications—such as cam upgrades or forced induction—can significantly increase output.

A: A performance tuner is often the best starting point. It offers immediate gains in horsepower and throttle response while also unlocking additional adjustability. Pairing a tuner with a cold air intake is a great next step for maximizing results.

A: While an MDS isn’t technically needed, most experts recommend installing one to eliminate the main weak point of modern HEMI engines—problematic lifters known to cause the dreaded “HEMI tick.” For a full breakdown of how MDS works, see our guide: What Is an Active Fuel Management Delete and What Does It Do?