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Upgrading Your Subaru WRX: Top Mods to Improve Performance -

Upgrading Your Subaru WRX: Top Mods to Improve Performance

The Subaru WRX is a popular sports sedan that automotive enthusiasts highly sought after. The WRX has a reputation for being a reliable and affordable performance car, making it an excellent option for people who want a fun car without breaking the bank. This article will discuss the best Subaru mods for a 4th Gen WRX (2014-2021).

1. Cold Air Intake

The first mod we recommend for a 4th Gen Subaru WRX is a cold air intake. A cold air intake allows more air to flow into the engine, increasing horsepower and torque. It can also improve engine sound and throttle response. Many cold air intakes are available, but we recommend using a reputable brand such as COBB or AEM.

2. Exhaust System

A performance exhaust system can increase horsepower, torque, and engine sound. It can also improve fuel efficiency and reduce exhaust emissions. Many different types of exhaust systems are available, including cat-back, axle-back, and turbo-back. We recommend using a cat-back exhaust system for the best balance of performance and sound.

3. Suspension Upgrades

Although it already has a sport-tuned suspension, upgrading to WRX aftermarket parts for suspension components can improve handling even further. You can upgrade to coilovers or lowering springs for the best balance of performance and comfort. Some popular brands of suspension components include KW, Tein, and BC Racing.

4. ECU Tune

An ECU tune can optimize the WRX's engine performance by adjusting the fuel and ignition timing. This can increase horsepower, torque, and throttle response. An ECU tune can also improve fuel efficiency and reduce emissions. It’s best to look for a reputable tuner like Cobb or APR.

5. Intercooler

As it is responsible for cooling the air that flows into the engine, this improves engine performance. Upgrading to a larger or more efficient intercooler can increase horsepower and torque and reduce engine heat soak. Some popular brands of intercoolers include Mishimoto, Process West, and Cobb.

6. Turbo Upgrade

Upgrading to a larger or more efficient turbocharger can increase horsepower and torque significantly. However, this is a more expensive and complex mod that experienced professionals should only do. Some popular brands of turbochargers include Garrett, Blouch, and Forced Performance.

7. Brake Upgrades

The WRX already has good brakes, but upgrading to aftermarket brake pads, rotors, and calipers can improve stopping power and reduce brake fade. We recommend going with a reputable brand such as Brembo or StopTech.

8. Wheels and Tires

Upgrading to lighter and wider wheels can improve handling and performance. Upgrading to high-performance tires can also improve grip and traction. You can try popular brands of wheels and tires, including Enkei, Volk, Michelin, and Bridgestone.

9. Performance Clutch

The WRX's stock clutch can handle the power output, but if you plan on increasing the power significantly, you will need to upgrade the clutch. Upgrading to a performance clutch can improve clutch engagement and shifting feel. Some popular brands of performance clutches include ACT, Exedy, and South Bend.

10. Intake Manifold

The stock intake manifold on the WRX can be a real bottleneck when it comes to airflow, especially at higher RPMs. But fear not–upgrading to an aftermarket intake manifold can make a difference. You'll see improvements in horsepower, torque, and better throttle response. 

When choosing an intake manifold, some of the most popular brands include Cosworth and GrimmSpeed. These companies are known for their high-quality, performance-driven parts that can take your WRX to the next level. 


The 4th Generation Subaru WRX (2014-2021) is an impressive car with a host of performance-enhancing parts available on the market. Aftermarket suppliers provide the opportunity to upgrade the car with reliable and quality parts to ensure the best performance. 

Subaru performance parts, such as brake kits, exhaust systems, suspension components, and engine components, can all be sourced from a reliable supplier. With the right parts, the 4th Generation WRX can be transformed into a powerful and reliable machine that will provide years of enjoyment.

As the leading supplier of Subaru mods, Subimods has everything you need to take your ride to the next level. We've got you covered, from performance upgrades to replacement parts and accessories. We offer the lowest prices around and free shipping on orders over $250. Shop now! 


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