So you've got a turbocharged Subaru and want to squeeze some extra power out of it? Headers are a popular upgrade that can help you achieve just that. Here's the scoop on everything you need to know about Subaru turbo headers:

What are Headers and Why Get Them?

Headers replace the stock exhaust manifold, which is like a bottleneck for exhaust gases. Upgraded headers allow for smoother exhaust flow, resulting in more power (generally around 15-20 HP and torque). It's important to note that these gains can vary depending on factors like the dyno used and other mods on your car.

Picking the Perfect Header:

There's no single "best" header brand, but there are a bunch of reputable manufacturers to choose from. Prices typically range from under $500 to over $1000. Here are some things to consider when making your choice:

Equal vs. Unequal Length: Equal length headers provide a more traditional engine sound, while unequal length ones maintain the signature boxer rumble (although the sound change might be subtle).

Twin Scroll Turbo? If you have one, you'll need a special equal length header designed for it. Otherwise the benefits like earlier spool vs. equally sized regular turbo are gone.

Powerband: Different headers affect the powerband in various ways. Consider what kind of power delivery you're looking for (low-end, mid-range, or high-end).

Additional Considerations:

Fitment: Double-check fitment for your specific Subaru model and year, especially for STIs and 2006+ WRX models.

Downsides: Headers can cause a slight increase in turbo spool time (around 300 RPM). Some early headers may have fitment issues, and some headers designed for STIs might require an STI oil pan for WRX use.

Benefits Beyond Power: Headers can also help reduce under-hood temperatures and improve Exhaust Gas Temperatures (EGTs).

Installation: The good news is that installing headers can be done in a relatively short amount of time! Here's a breakdown:

1 hour: If you're keeping your factory uppipe or using a previously installed aftermarket uppipe, you can expect the installation to take around an hour.

Plan for flexibility: Keep in mind that installation times can vary depending on your specific situation.

For a smoother and faster experience, consider having a lift and air tools available. However, these aren't absolutely necessary for a successful installation.

Heat Wrap/Coating: Heat Wrap or Ceramic Coating? It's Your Call!

Headers get hot!  There are two main ways to manage this heat: heat wrap and ceramic coating. Both have their pros and cons, so let's explore:

Benefits:

Improved Flow: Both wrapping and coating can help retain heat in the headers, which can improve exhaust flow and potentially lead to a slight power increase (although gains haven't been definitively proven).

Cooler Engine Bay: Reduced underhood temperatures can help keep your intercooler happy by minimizing heat soak.

Things to Consider:

Cost: Both options add to the overall cost of your headers.

Lead Time: Ceramic coating can add some waiting time to your project.

Durability: Increased heat exposure can sometimes accelerate metal fatigue, especially around welds. This is a concern for both wrapping and coating.

Warranty: Wrapping or coating your headers might void the warranty on the exhaust components. Check with the manufacturer to be sure.

Coating Temperature Range: If you choose ceramic coating, ensure it can handle the extreme Exhaust Gas Temperatures (EGTs) of your Subaru, which can reach 1400-1600 degrees Fahrenheit. Some standard coatings aren't rated for these high temperatures.

The Choice is Yours!

Ultimately, the decision of whether to wrap or coat your headers is up to you. Both options offer potential benefits for performance and engine health, but there are also some trade-offs to consider.

The Final Take:

Upgrading your headers can be a great way to unlock more power and performance from your turbocharged Subaru. By considering the factors mentioned above, you can choose the perfect header to meet your needs and unleash the full potential of your ride!