How to Manage Turbo Lag in a Mitsubishi Evo for Improved Acceleration?

If you are a proud owner of a Mitsubishi Evo, you’ve likely experienced the sheer power and exhilaration this car can bring. However, you may also have noticed something called turbo lag — that slight delay from the moment you press the throttle to when the turbocharger provides the boost to your engine. This can be slightly frustrating, especially when you’re looking for swift acceleration. But don’t worry, we’ve got you covered. Here, we will explore various ways to manage turbo lag for increased acceleration and an improved driving experience.

Understanding Turbo Lag

Before venturing to mitigate the effects of turbo lag, it’s crucial to understand the mechanics behind it. Turbo lag is the time delay between the moment the throttle of a car is opened and the turbocharger provides the necessary boost to the engine. This lag can be frustrating, as it can detrimentally impact the car’s performance, especially under quick acceleration.

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Turbo lag occurs because the turbocharger’s turbine requires a sufficient amount of exhaust gas to spool it up to its operational rpm (revolutions per minute). It typically happens in low rpm situations, as the engine isn’t producing enough exhaust gases to generate the desired boost.

Mitigating Turbo Lag through Throttle Adjustment

The first technique you can employ to manage turbo lag is throttle adjustment. The throttle is the device that controls the flow of fuel or air mixture to an engine, and its manipulation can significantly impact turbo lag. By keeping the throttle slightly open, even when off power, you can maintain a steady flow of exhaust gases to the turbocharger, which can help reduce lag time.

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This technique, often referred to as ‘left-foot braking,’ involves the use of the left foot to control the brake while the right foot manages the throttle. It’s a popular practice amongst professional drivers and can improve the response time of the turbocharger. However, it requires a certain level of skill and precision to execute properly.

Using a Twin-Scroll Turbocharger to Reduce Lag

Another efficient method to combat turbo lag is by upgrading your Evo’s turbocharger. A twin-scroll turbocharger could be an ideal choice. This type of turbo separates the exhaust gases in two different routes, called scrolls, which lets the turbocharger harness power from both low and high rpm ranges.

Therefore, a twin-scroll turbocharger can utilize the exhaust gases more effectively, providing quicker boost and reducing lag. It also improves the overall efficiency and power of the engine. Remember, it’s important to consult with an itrader or a certified mechanic before making such a significant modification to your vehicle.

Exploring the Role of an Anti-Lag System

Anti-lag systems (ALS) can be another viable solution for turbo lag. These systems are designed to keep the turbocharger spinning even when the throttle is closed, effectively eliminating the lag. ALS works by igniting a small amount of fuel/air mixture in the exhaust manifold, which keeps the turbine spinning.

However, keep in mind that while ALS can be highly effective, it can also put significant strain on the engine and exhaust system due to the extra heat and pressure generated. Therefore, this solution should be considered with caution and preferably under the guidance of a professional.

Optimizing the Exhaust System for Better Turbo Performance

The exhaust system of your Mitsubishi Evo plays a crucial role in turbocharger performance. A larger, free-flowing exhaust system can help reduce turbo lag by allowing the exhaust gases to exit more quickly, thus providing the turbo with a more efficient power source.

An upgrade to a high-flow catalytic converter or a straight-pipe exhaust system, can drastically improve the flow of exhaust gases, resulting in better turbo response. However, it’s worth noting that such alterations should be made with compliance to your location’s emission standards and noise regulations.

By understanding these factors and implementing the methods outlined in this article, you can effectively manage turbo lag in your Mitsubishi Evo. This will not only improve acceleration, but also enhance your overall driving experience. Just remember, modifying a car’s engine or exhaust system may void the warranty and could have legal implications depending on your location. Always consult with a professional before making significant modifications to your vehicle.

Introducing Launch Control to Minimize Turbo Lag

One of the more advanced techniques you might consider to manage turbo lag is to introduce a launch control system. Launch control is a device originally designed for racing cars to provide the optimal rev range for quick acceleration from a standstill. It’s a computer-based system that helps control the engine’s rpm, keeping it at an optimal level for the turbocharger to function efficiently.

Now, you might be wondering, ‘how does it work?’ When engaged, launch control allows the driver to focus solely on clutch control, as the system maintains the engine at a specific rpm within the low rpm band. This, in turn, ensures a constant flow of exhaust gases to the turbocharger, enabling it to spool up faster and effectively reducing turbo lag.

It’s important to note, however, that the implementation of a launch control system requires a solid understanding of the vehicle’s mechanics and should be installed by a professional to avoid any potential damage to the engine. Also, keep in mind that this method might void the manufacturer’s warranty and could be subject to local laws and regulations.

Utilizing Variable Geometry Turbochargers

Another technological solution to manage turbo lag is the use of variable geometry turbochargers (VGTs). VGTs have movable parts that adjust to match the engine’s rev range, which allows the turbo to function efficiently across a broader rpm spectrum.

The way VGTs operate is by changing the angle of the vanes in the turbocharger, manipulating the velocity and direction of the exhaust gases hitting the turbine. This allows the turbo to spool up quickly even at lower rpms, minimizing the lag and improving the throttle response.

There’s no doubt that VGTs can make a considerable difference in reducing turbo lag. However, they are notably more complex and expensive than traditional turbochargers. For this reason, you might want to consult with an itrader quote, a specialized quotation service for automotive parts, to get an estimate before deciding to install a VGT.


Turbo lag can be a minor annoyance when you’re eager to experience the full capability of your Mitsubishi Evo. Fortunately, there are a variety of methods to manage this issue, from basic throttle adjustment practices to more advanced solutions like launch control and variable geometry turbochargers.

While implementing these techniques, remember to keep the delicate balance between power and safety. Always seek professional help before deciding to make significant changes to your vehicle’s system. This is not only to ensure the work is done correctly, but also to maintain compliance with your local laws and regulations, and the terms of your warranty.

In the end, managing turbo lag effectively will result in improved acceleration and a more satisfying driving experience overall. So, whether you’re hitting the track or just cruising on the open road, these modifications can help you enjoy your Mitsubishi Evo to its fullest potential.

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