If you’re looking to boost your vehicle’s performance and improve fuel efficiency, an aftermarket engine tuning device could be the perfect solution. These devices have evolved significantly from the early days of computerized automotive tuning, where performance chips were literally microchips that users would plug into their vehicle’s computer system. Today, these systems are more advanced and offer a broader range of features.
Thanks to advancements in automotive technology and the introduction of the OBDII port under the dashboard, the old microchip systems have been replaced by plug-and-play tuning devices. These modern tools not only enhance power and fuel economy but also provide additional benefits such as improved throttle response, optimized transmission shifts, and the ability to check diagnostic trouble codes. Some of the most advanced models even come with detailed display screens that show a wide array of engine parameters.
With so many options available on the market, it can be challenging to choose the right one. Here are some of the top choices:
1. Pedal Commander

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The Pedal Commander is designed to adjust the electronic input from your accelerator pedal to the engine computer. Modern vehicles with throttle-by-wire systems often have a bit of lag, and the Pedal Commander eliminates this delay, resulting in sharper acceleration and throttle response. It doesn’t add power directly, but it makes the accelerator pedal more or less sensitive to your inputs.
The device connects via the OBDII port and has a control box that can be mounted on the dashboard, under the dash, or in the glove box. It offers wireless control through a smartphone app. The Pedal Commander comes with 36 settings, including four modes—Eco, City, Sport, and Sport+—along with sensitivity adjustments for each mode.
Pros:
– Adjustable modes
– Offers increased performance and fuel economy
– No mechanical knowledge required
– Wireless control from a smartphone
– Users cite instant improvements
– No risk of engine damage
– Applies to many makes and models
Cons:
– Doesn’t add any power
– Expensive
2. Bully Dog Tuner and Monitor

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The Bully Dog Tuner and Monitor is a more elaborate system that improves performance and functions as a full performance gauge suite. It provides information on various engine parameters that may not be included in your vehicle’s gauge cluster. Once connected to the OBDII port, you can select from pre-programmed tunes that cater to different driving needs, such as towing or performance optimization.
Pros:
– Larger power gains
– Multiple tuning settings
– Elaborate gauge display
– Attractive mounting system for extended use
Cons:
– Model specific with limited applications
– Very expensive
3. DiabloSport inTune i3

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DiabloSport is a well-known name in the world of aftermarket tuning devices, and the inTune i3 is one of its most popular products. Designed to look like a smartphone, it can be easily tucked away when not in use. The device connects through the OBDII port and offers preprogrammed tunes, data-logging capabilities, and diagnostic code reading.
Pros:
– Large power gains
– Can be equipped with custom tunes
– Less expensive than similar devices
– Data-logging capabilities
– Easily stowed when not in use
– Offers individual fine-tuning
– Many model-specific applications
Cons:
– Not ideal for everyday gauge monitoring
– Requires updates through a wired internet connection
– Incorrect use can lead to engine damage
4. SCT Performance BDX Performance Tuner and Monitor

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The SCT Performance BDX Performance Tuner and Monitor is a comprehensive device that offers preprogrammed and custom tuning capabilities, an elaborate gauge screen, WiFi connectivity, data-logging, and diagnostic trouble code reading. It is ideal for drivers looking to maximize power or improve fuel economy.
Pros:
– Large power gains
– Can be equipped with custom tunes
– Less expensive than similar devices
– Data-logging capabilities
– Designed for daily display use
– Offers individual fine-tuning
– Many model-specific applications
– WiFi updates
Cons:
– Incorrect use can lead to engine damage
– Mounting bracket not included
How a Tuning Device Works
While the performance tuning devices discussed above may offer other functions, their key purpose is adding power and performance or improving fuel economy. These systems work similarly to the performance chips of the 1980s and 1990s, but they connect via the OBDII port instead of being plugged in directly.
Every modern engine is tuned to meet certain power and fuel economy standards while complying with federal emission requirements. Adjustments to fuel flow, ignition timing, and throttle input sensitivity can increase power output, improve fuel economy, or both. Custom tuning shops can push these limits further based on specific conditions and vehicle setups.
Modern devices offer more than just engine output adjustments. Features like data-logging, gauge displays, and diagnostic abilities make them valuable tools for both stock and modified vehicles. When shopping for a tuning device, ensure it meets your needs and fits your vehicle. Some are universal, while others are designed for specific vehicles and engines.
Whether you want your vehicle to be quicker and more responsive or improve fuel economy, these tuning devices can deliver the desired results. For additional features like diagnostic capabilities, custom tune uploads, and custom gauge readouts, consider investing in a more advanced tuning device.
