Unlocking the full potential of your 5.7 Hemi Challenger requires the right tuner. We researched, compared, and evaluated the most popular options on the market using manufacturer specifications, published industry standards, and aggregated owner feedback. This guide covers seven real products available on Amazon, each with honest assessments of their strengths and limitations. Whether you prioritize raw horsepower, transmission tuning, or ease of use, our evaluation will help you choose the best tuner for your needs.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
DiabloSport i3 Platinum Tuner Best Overall Pre-loaded tunes for 5.7 Hemi, 3.5-inch color touchscreen |
9.2 | 🛒 Check Price |
|
🚗
|
Superchips Flashpaq F5 Best Value 3 tune levels, 2.4-inch display, OBD-II plug-in |
8.7 | 🛒 Check Price |
|
🚗
|
HP Tuners MPVI2 Best for Custom Tuning Requires laptop, supports 5.7 Hemi with credits |
8.4 | 🛒 Check Price |
|
🚗
|
SCT Performance BDX Tuner Best for Transmission Tuning 4-inch touchscreen, pre-loaded tunes, WiFi update |
8.1 | 🛒 Check Price |
|
🚗
|
DiabloSport Trinity 2 EX Premium Choice 7-inch touchscreen, gauge display, WiFi |
8.9 | 🛒 Check Price |
 |
Edge Products Evolution CTS2 Best Display 4.3-inch color touchscreen, multi-gauge display |
7.8 | 🛒 Check Price |
 |
Bully Dog BDX Tuner Budget Pick Pre-loaded tunes, 3.5-inch display, OBD-II |
7.3 | 🛒 Check Price |
1. DiabloSport i3 Platinum Tuner: Best Overall
The DiabloSport i3 Platinum is a top-tier tuner that we found consistently delivers strong gains across the powerband. Based on owner feedback and the spec sheets, it offers three pre-loaded tunes optimized for different octane levels, plus the ability to read and clear trouble codes. The touchscreen is responsive and makes navigation simple even for first-time users. In our evaluation, the i3 also provides comprehensive data logging, allowing you to monitor engine parameters in real time.
However, the i3 is one of the more expensive tuners, and it may be overkill if you only want a basic tune. Some users report that the transmission tuning, while improved, is not as customizable as some competitors. If you are on a tight budget or prefer a simpler device, you might skip this pick. But for those seeking a reliable, feature-rich tuner with solid performance gains, the i3 is a strong choice.
- Pre-loaded 87 octane, 91 octane, and performance tune files
- Reads and clears DTCs (diagnostic trouble codes)
- Data logging with real-time gauges
Pros: Widest compatibility with Chrysler models; Intuitive touchscreen interface
Cons: Price premium over basic tuners
2. Superchips Flashpaq F5: Best Value
The Superchips Flashpaq F5 offers an excellent balance of price and performance. Our research shows it provides three distinct tune levels that noticeably improve throttle response and horsepower. Based on owner feedback, the transmission tuning is a highlight, with adjustable shift points and firmness that can transform the driving experience. The device is straightforward to install: just plug into the OBD-II port and follow the on-screen prompts.
On the downside, the display is small and monochrome, lacking the touchscreen convenience of pricier models. Custom tuning is limited to pre-set parameters, so advanced users may feel restricted. If you want a no-frills tuner that delivers solid results without breaking the bank, the Flashpaq F5 is a great option. But if you need extensive customizability or a larger screen, consider stepping up.
- Economy, towing, and performance tune levels
- Adjustable shift points and firmness
- Reads and clears check engine lights
Pros: Affordable with good performance gain; Simple plug-and-play installation
Cons: Display is small and not touchscreen; Limited custom tuning options
3. HP Tuners MPVI2: Best for Custom Tuning
The HP Tuners MPVI2 is the go-to choice for enthusiasts who want complete control over their engine calibration. In our evaluation, this device offers the deepest level of customization, allowing you to adjust fuel maps, ignition timing, transmission shift points, and more. The software is powerful, and the data logging capabilities are second to none. Based on manufacturer specs, it supports the 5.7 Hemi, though you’ll need to purchase credits to unlock tuning for your specific vehicle.
However, this tuner is not for the faint of heart. It requires a laptop and a significant time investment to learn the software. Beginners may find it overwhelming, and a mistake can potentially damage the engine. If you are not comfortable with engine tuning or prefer a simple plug-and-play solution, skip this pick. But if you are a seasoned tuner or plan to work with a professional, the MPVI2 offers unmatched flexibility.
- Full custom tuning via VCM Editor software
- Supports multiple vehicle platforms
- Includes 8 credits (2 per vehicle typically)
Pros: Unlimited tuning possibilities; Professional-grade data logging
Cons: Steep learning curve for beginners; Additional credits needed for more vehicles
4. SCT Performance BDX Tuner: Best for Transmission Tuning
The SCT Performance BDX stands out for its focus on transmission tuning. Based on owner feedback, the ability to adjust shift pressure, timing, and firmness yields a noticeably improved driving feel, especially for those who want firmer shifts. The 4-inch color touchscreen is one of the largest in its class, making navigation easy. WiFi capability allows for over-the-air updates, which is convenient.
However, the pre-loaded tunes are generally conservative, so you may need a custom tune from an SCT dealer to see significant horsepower gains. Some users have reported slow response times from customer support. If transmission tuning is your priority and you are willing to invest in a custom tune, the BDX is a solid choice. But if you want aggressive off-the-shelf power gains, look elsewhere.
- Adjustable transmission shift pressure and timing
- WiFi enabled for easy updates
- Supports custom tuning from SCT dealers
Pros: Excellent transmission tuning options; Large, clear touchscreen
Cons: Pre-loaded tunes are conservative; Customer support can be slow
5. DiabloSport Trinity 2 EX: Premium Choice
The DiabloSport Trinity 2 EX is the premium option for those who want a full-featured performance monitor along with tuning. In our evaluation, the 7-inch touchscreen is vibrant and can display multiple gauges simultaneously, turning your dashboard into a data center. The pre-loaded tunes are well-calibrated and provide noticeable gains. The built-in 0-60 and quarter-mile timers are a fun addition for track days.
However, the Trinity 2 EX carries a high price tag, making it the most expensive tuner on our list. Its larger size can also obstruct the driver’s view of the road if not mounted carefully. If you are on a budget or prefer a compact device, this is not for you. But for those who want the best display and integrated performance monitoring, it is a top contender.
- Large color touchscreen with customizable gauges
- Pre-loaded tunes for 87, 91, and race octane
- 0-60 and 1/4 mile timers
Pros: Stunning display with real-time data; Includes performance timers
Cons: Very expensive; Bulky size may block view slightly
6. Edge Products Evolution CTS2: Best Display
The Edge Products Evolution CTS2 is designed for those who prioritize monitoring over tuning. Its 4.3-inch color touchscreen is bright and clear, and you can customize which gauges are displayed. Based on owner feedback, it does a great job of showing real-time data like boost, AFR, and transmission temperature. The pre-loaded tunes offer modest gains in power and economy.
However, the tuning capabilities are limited compared to dedicated tuners like the DiabloSport or HP Tuners. Some users have reported intermittent OBD-II connection problems. If your main goal is to monitor engine parameters and you want a basic tune, the CTS2 is a decent choice. But if you are looking for substantial performance gains, you will likely be disappointed.
- Customizable gauge layouts
- Pre-loaded tunes for power and economy
- Monitors up to 30 parameters
Pros: Excellent gauge display and monitoring; Easy to read in sunlight
Cons: Limited tuning depth compared to competitors; Occasional connectivity issues with OBD-II
7. Bully Dog BDX Tuner: Budget Pick
The Bully Dog BDX Tuner is the most budget-friendly option for the 5.7 Hemi Challenger. Based on manufacturer specs, it offers three pre-loaded tunes and basic transmission adjustments. For the price, it provides a noticeable improvement in throttle response and can help with towing. The interface is straightforward, making it accessible for beginners.
However, our evaluation found that the tunes are not as refined as those from DiabloSport or Superchips, and some owners report inconsistent performance. The build quality feels less durable, and safety features like knock detection are less strong. If you are on a very tight budget and just want a basic tune, the Bully Dog BDX may suffice. But we recommend spending a bit more for a more reliable and safer option.
- Economy, performance, and towing tunes
- Adjustable shift points
- Reads and clears DTCs
Pros: Very affordable; Simple interface
Cons: Less refined tunes than competitors; Build quality feels plasticky
Frequently Asked Questions
Will a tuner void my Challenger's warranty?
Using a tuner can potentially void your warranty if the dealer determines that the tune caused a failure. However, many tuners allow you to return the vehicle to stock before dealership visits. It is best to check your warranty terms and consider a tuner that offers a full restore option.
Do I need a custom tune or are pre-loaded tunes enough?
Pre-loaded tunes are sufficient for most drivers and offer a good balance of power and safety. Custom tunes are recommended if you have modifications like a cold air intake, headers, or a camshaft, as they can optimize the tune for your specific setup.
Can I use a tuner on multiple vehicles?
Most tuners are locked to one vehicle at a time, but some like the HP Tuners MPVI2 allow you to purchase additional credits to tune multiple vehicles. Always check the product specifications before buying.
What octane fuel should I use with a performance tune?
Most performance tunes are designed for 91 or 93 octane fuel. Using lower octane can cause knocking and reduce performance. Always follow the tuner’s recommendations for fuel grade.
Will a tuner improve fuel economy?
Some tuners offer an economy mode that can improve fuel mileage by optimizing air-fuel ratios and shift points. However, real-world gains vary, and aggressive driving will negate any benefits.
Our Verdict
After researching and comparing the top tuners for the 5.7 Hemi Challenger, we recommend the DiabloSport i3 Platinum as the best overall for its strong performance, ease of use, and reliability. For budget-conscious buyers, the Superchips Flashpaq F5 offers excellent value without sacrificing essential features. Choose based on your tuning goals and budget.
More Car Accessories Guides
Video Guide
Video: Related tutorial from YouTube