WRX Turbo Upgrade Package: What's Included and How to Choose

A factory Subaru WRX turbocharger hits a hard flow limit at around three hundred horsepower. Going past this limit needs a matched set of airflow and fuel upgrades. The right setup keeps your EJ or FA engine safe from costly rod failure.

Choosing the right setup can be hard with so many options. You must know which parts are vital and how they work together before you start. The following sections break down what a complete WRX turbo upgrade package includes. How to match it to your power goals, and the supporting mods that keep your build safe.

Contact Crawford Performance today to request a consultation on the WRX turbo upgrade package that fits your build.

What a Complete WRX Turbo Upgrade Package Includes

Adding more power to a Subaru WRX is a major milestone for any owner. But swapping the stock turbo is not a simple drop-in job. A complete wrx turbo upgrade package is more than just a larger compressor wheel. It is a complete setup that brings a new turbo, fresh hardware, and fuel parts together to keep your engine safe.

The turbocharger and installation hardware

The main part of any kit is the turbo itself. This unit sits in the stock spot or a rotated mount. A full package also provides the needed gaskets, seals, and oil lines. Using fresh hardware prevents oil leaks and exhaust leaks that can hurt boost. These base parts make up the core of your new build.

Fuel and cooling supporting parts

When you increase boost, your engine needs more fuel and cold air to prevent rod failure. For this reason, extra parts are needed to keep the engine from running lean. A complete kit often bundles larger injectors, a strong fuel pump, and a boost controller. These parts work together to supply enough fuel and control air pressure.

You will also need to meet the intercooler requirements for WRX turbo upgrades to cool the hot air before it enters the engine. Swapping to a larger top-mount or a front-mount intercooler helps prevent knock and engine damage.

Mandatory engine management and tuning

An upgraded turbo moves far more air than the stock unit. Because of this, a new ECU tune is needed after a turbo swap to keep the engine safe. A custom tune tells the car how to handle the new air and fuel mix. Running a larger turbo without a new tune will cause severe engine damage in a matter of seconds.

Finally, you must consider emissions rules if you drive on public roads. Agencies like the California Air Resources Board check upgrade parts to make sure they do not hurt your car's clean air systems. Getting a clean test is key to keeping your street car legal and safe.

Stock-Location vs. Rotated Turbo Kits

When you plan your build, you must decide where to mount the new turbocharger. This choice changes how you install your parts and how much work you must do. It also sets a limit on how much power your engine can make.

Factory placement and easy setup

A stock-location turbo fits right into the OEM space. It uses the same bolts and sits in the same spot as your factory unit. This means you can keep most of your standard parts. You do not need to buy custom pipes, odd hoses, or new brackets.

Standard housings are built to fit the factory layout. Since they bolt up like stock, you can do the work at home with basic hand tools. This makes them a great starting point for DIY mechanics who want a solid power boost.

This setup makes the install fast and simple. You can use standard turbo inlet hoses and factory-style downpipes. For many street drivers, this is the best path to keep costs low. But the tight factory space limits how large your new turbo can be.

Custom piping and high power

A rotated turbo kit moves the unit to a new spot in your engine bay. This setup spins the turbocharger away from its factory position. By doing this, you clear up a lot of room under the hood. You can then fit a much larger compressor to make high boost.

This path gives you the most power, but it needs far more work. You must use custom fabrication to fit the new setup. You will need special intake pipes, new exhaust plumbing, and custom intercooler tubes. If you are choosing between stock-location and rotated turbo upgrades, look at your power goals first.

Emissions compliance and road legality

You must also think about local laws when you change engine parts. Large turbo changes can affect how your car handles fuel and exhaust. In states with strict smog checks, your aftermarket parts must meet precise standards to stay road legal.

State agencies inspect aftermarket performance gear to ensure cars run clean. For example, the California Air Resources Board tests new parts to confirm they do not hurt your emissions control systems. Choosing the right parts helps you avoid fines and pass tests.

We suggest that you talk to an expert before you start a major build. Our team can help you pick a complete wrx turbo upgrade package that fits your goals and meets local rules.

Power Targets by Turbo Family and Platform

Each Subaru engine reacts in its own way to a new turbo. You must choose a turbo that matches your goals. It is best to view power numbers as common ranges rather than sure gains. Your real power will depend on your fuel, your engine health, and your support parts.

Typical output targets by turbo family

Older WRX models with EJ series engines have many proven turbo options. These include the 2002 to 2007 WRX, the 2008 to 2014 WRX, and Forester models. For these platforms, the TD05H-20G turbo family often supports up to about 400 horsepower. But if you want to push your build further, the TD06SL2-20G turbo family can support 450 or more horsepower. They are great for street cars that need quick boost response.

Power limits for FA20 and FA24 platforms

Newer direct injection Subaru engines make great power with a wrx turbo upgrade package. They respond very well to more air. For the FA20 engine in the 2015 to 2021 WRX, a turbo like the TD06SL2-54X can support about 500 horsepower. For extreme track builds, a larger turbo like the BL58XR can support up to 700 horsepower. On the VA platform, a turbo like the FP Blue 73HTZ can push common builds over 475 wheel horsepower. You just need the right support parts.

The newer 2022 and newer WRX FA24 platform also reacts very well to turbo changes. This engine is found in the VB WRX. A turbo upgrade like the BL54XR can support about 660 horsepower on this platform. On pump gas, a basic street upgrade can support over 400 wheel horsepower and torque. These newer engines flow very well. This makes the FA24 a great choice for a turbo build.

Emissions compliance and safety limits

When you build a high power Subaru, you must also think about local laws and compliance. Many custom parts must meet strict emissions rules. In states like California, parts must be exempt under the California Vehicle Code to be legal for street use. You can search the California Air Resources Board site to see if your parts are exempt. Staying legal is just as key as making power.

To keep your engine safe at these high power levels, you will need to add essential WRX power and reliability mods to your build. Larger turbos put high stress on stock internal parts. Precise tuning and proper fueling are needed to avoid engine damage.

Supporting Mods You Cannot Skip for a WRX Turbo Upgrade

A larger turbo changes how your engine breathes. To keep your car safe, you need the exact supporting modifications for a WRX stage 2 setup. Install these parts before you put in a new turbo. If you try to run more boost without the right parts, you risk quick and costly engine damage. Many drivers focus only on the turbo itself. However, a true wrx turbo upgrade package must address fueling, cooling, and control systems together. Doing so ensures that you get the best power gains while keeping your engine safe on the street or track.

Engine reliability and rod safety

Both EJ and FA engines are quick to react to boost changes. When you push more air into the cylinders, the load on your engine internals climbs fast. If your fuel flow or wastegate control is off by even a small amount, you can cause engine damage. A poor setup with a larger turbo is a leading cause of rod failure in these engines. If your power goals are too high for the stock block, you must install new pistons and rods. Upgraded internals give your block the strength it needs to survive high boost pressure.

Fueling and cooling needs

You must cool and feed the heavy rush of air from a new turbo. Stock fuel pumps and injectors are designed for lower factory flow rates. If you do not upgrade them, they cannot supply enough fuel to match the extra air. Cooling is just as vital as fueling when you increase boost. Hot intake air is less dense and carries a higher risk of engine knock. Upgrading your core systems helps keep intake air cool, which keeps the engine safe under load.

The five essential upgrades

Here are the five critical modifications you must include in your WRX build:

1. Upgraded fuel injectors: You need larger injectors to flow more fuel into the engine. If you run out of fuel, the engine runs lean, which leads to knock and fast damage.
2. High-flow fuel pump: A strong pump sends fuel to your injectors at a steady rate and high pressure. This keeps your fuel flow stable when boost pressure climbs under full throttle.
3. Boost controller: A good controller lets your ECU manage boost levels with precision. This prevents sudden boost spikes that can easily crack a stock block and ruin your engine.
4. Intercooler: You need an upgraded intercooler to keep intake air cool. Choosing the intercooler requirements (TMIC vs FMIC) for WRX turbo upgrades depends on your goals. Pick a top mount for fast response, or a front mount for track cooling.
5. Custom ECU tune: A custom tune is required to map your air and fuel ratios safely. In states with strict exhaust rules, keeping your car compliant is vital. For example, some parts must pass tests by the California Air Resources Board. This ensures they do not reduce how well your car's pollution controls work.

Talk to Crawford Performance about pricing and part availability for your WRX turbo upgrade package before you order.

How Much Does a WRX Turbo Upgrade Cost?

Upgrading your WRX turbo is a major step. It can make much more power but you must plan for all the costs first. The total price of a wrx turbo upgrade package depends on your power goals and your car platform.

Upfront costs of the turbocharger

For the turbocharger itself, market prices vary based on size and design. Upgraded units often cost about $1,000 to $2,700 depending on your model. This price range covers standard units like those in the Boost Lab catalog. This upfront cost does not include basic lines or hardware. Custom setups often need special plumbing that will add to the bill.

Core charges and warranties

Many builders use a core charge system when you buy a new part. This charge is a deposit. It is often around $1,000 and you must pay it upfront. You will get this money back if you send your stock turbo to the builder in good shape. If your stock unit is damaged, you may lose part of this deposit. You must return your OEM turbo within 30 days to get your full refund.

Make sure to check the warranty terms before you buy. Many top brands offer a basic warranty on parts. This coverage often lasts for 12 months or 12,000 miles from your purchase date. A good warranty ensures that any factory defects are covered if the unit fails early. It gives you peace of mind as you push your car.

Supporting parts and total packages

A true turbo upgrade is not a single drop-in part. To run safely, your car needs other WRX performance modifications like larger fuel injectors and a stronger fuel pump. These supporting parts can add thousands of dollars to your build. Skipping these extra upgrades can lead to major engine failure. You will also need a custom ECU tune to keep the engine from failing.

You must also think about emissions laws when you change performance parts. Complying with regulations from the California Air Resources Board ensures your build remains street legal. Testing and legal compliance can add some extra fees to your total budget. Keep these rules in mind as you plan your project.

Because every car is unique, we do not quote fixed package prices online. It is best to get a custom quote. You can contact the Crawford engineering team for an exact price for your own car. Our experts will help you design a setup that fits your power goals and your budget.

Installation, Tuning, and Choosing a WRX Turbo Package

Upgrading your turbocharger is one of the best ways to make more power. But fitting a larger unit is not a simple drop-in job. A complete essential WRX power and reliability mods build needs a complete plan. To run safely, any new turbo needs a custom engine tune and proper handling for fuel and cooling. Without these extra parts, you risk severe engine damage.

Selecting the right turbo setup

Before you buy any parts, you must match the upgrade to your own goals. You should look at your driving style, your budget, and your engine platform. A daily driver needs quick throttle response, while a track car focuses on high peak power. We highly recommend working with a skilled engineering team to pick your setup. They will help you select a balanced performance tuning parts for your WRX package that fits your vehicle. This ensures all your new parts work together without creating bottlenecks.

Tuning for EJ and FA engines

When you change the turbo size, the engine gets a lot more air. Both EJ and FA engines are highly sensitive to these changes. Each platform needs expert tuning and exact fuel handling to stay safe. If you run a larger turbo on stock fueling or a factory tune, you can cause rod failure. A custom Electronic Control Unit (ECU) tune is a must after a turbo swap. This tune changes your air and fuel ratios to keep your engine running smoothly under high boost.

A complete wrx turbo upgrade package will only perform well with the right software setup. Your tuner will adjust settings like ignition timing, boost pressure, and fuel injection. This tuning process must account for the fuel octane you use, such as 91 or 93 pump gas. A proper setup prevents engine knock and keeps your engine reliable for years.

Emissions and legal compliance

You must also think about emissions laws when you modify your car. Many states have strict testing rules. For example, the California Air Resources Board checks aftermarket parts to make sure they do not hurt your emissions systems.

Under California Vehicle Code Section 27156, certain parts can get an exemption if they do not reduce how well your pollution controls work. This is why some aftermarket performance products for Subaru vehicles receive specific Executive Order numbers. If you live in a state with strict testing, always verify that your new parts are legal for road use before you buy.

Request a free consultation to spec the right turbo, supporting mods, and tune for your WRX.

Frequently Asked Questions

Do I need supporting modifications for a WRX turbo upgrade package?

Yes, you must upgrade other parts when you install a larger turbo to prevent engine failure. A complete setup should include larger fuel injectors, a stronger fuel pump, a boost controller, and a larger intercooler. You can read about these needs in our WRX stage 2 setup guide.

Are WRX turbo upgrade packages legal in California?

Under state law, aftermarket parts need a special permit to be legal on public roads. According to the California Air Resources Board, performance parts are legal if they do not hurt car smog control systems. Other parts are meant only for race track use.

What is a turbo core charge?

A core charge is an added fee you pay when buying an upgraded turbo. The seller holds this money until you send them your old factory turbo. Once they get your good stock part back, they refund the full fee. This process helps shops rebuild and reuse old parts.

How long do I have to return my stock turbo for a core refund?

Most shops give you only 30 days from your purchase date to send back your stock turbo. If you miss this time, you will lose your core refund. Always inspect and pack your old part with care to make sure it is not cracked or broken.

Are You Ready to Choose Your Complete WRX Turbo Upgrade Package?

Delaying your WRX turbo upgrade package means keeping a restrictive stock setup that holds back your boxer engine's true power potential and limits track speed. Starting your custom build today avoids long parts lead times and ensures your performance car is fully ready before the summer track season begins. Our high performance setups help you lock in a complete package of supportive mods that protects your boxer engine from failure and keeps you safe.

Our expert team is ready to help you choose the right parts to build a reliable, race-proven Subaru that performs under extreme track conditions. Contact Crawford Performance today to request a consultation with our engineering team.