Are Aftermarket Headers Worth It: Essential Guide
Yes, aftermarket headers can be worth it for car owners looking to boost performance, improve engine sound, and potentially increase fuel efficiency. They replace restrictive factory exhaust manifolds, allowing your engine to breathe better and release exhaust gases more freely. However, the benefits depend on the specific vehicle, the quality of the headers, and other modifications.
Ever wonder if changing your car’s exhaust headers is a smart move? Many car owners hear about aftermarket headers and think they’re just for race cars. But, the truth is, they can offer real benefits for your everyday ride. It can feel tricky to understand the exhaust system, and confusing jargon doesn’t help. You want to make sure any upgrade you do is safe, effective, and worth your hard-earned money. This guide will break down exactly what aftermarket headers are, how they work, and if they’re the right choice for your car. We’ll cover everything you need to know to make an informed decision.
What Are Exhaust Headers and Why Upgrade?
Your car’s engine creates exhaust gases when it burns fuel. These gases need to escape. The factory exhaust manifold is the first part of the exhaust system. It collects the hot gases from each cylinder (the parts of the engine where fuel burns) and directs them into the rest of the exhaust pipe. Think of it like a funnel for smoke.
However, factory manifolds are often designed for quietness and cost-effectiveness. This means they can be a bit restrictive. They might have sharp bends or a design that doesn’t let exhaust gases flow out as smoothly or quickly as your engine could handle.
Aftermarket headers are designed differently. They are built to improve the flow of exhaust gases. Each pipe from a cylinder is typically made longer and smoother, often with gentler bends. This helps the exhaust gases exit the engine more efficiently. This improved flow is the main reason people consider upgrading.
How Headers Improve Engine Performance
When your engine can expel exhaust gases more easily, it doesn’t have to work as hard. This is often called “reducing backpressure.” Lower backpressure means your engine can “breathe” better. Here’s how that translates into benefits:
- More Horsepower and Torque: By letting your engine exhale more freely, it can produce more power. You might notice your car feels quicker, especially at higher speeds. This is because the engine doesn’t waste energy fighting against a choked exhaust.
- Improved Throttle Response: A less restricted exhaust can make your car feel more responsive when you press the gas pedal. The engine reacts faster to your commands.
- Better Fuel Efficiency (Sometimes): While not the primary goal, a more efficient engine can sometimes use less fuel. When the engine doesn’t have to struggle as much, it can operate more optimally, potentially leading to a slight improvement in miles per gallon. However, this benefit is less significant than performance gains and can be negated if you use the extra power often.
- Enhanced Engine Sound: Aftermarket headers often change the sound of your exhaust. It can become deeper, more aggressive, and sportier. This is a subjective benefit – some people love it, others prefer a quieter ride.
Types of Aftermarket Headers
Not all aftermarket headers are the same. They come in different styles, materials, and designs, each offering slightly different benefits and affecting performance in various ways. Understanding these types will help you choose the right ones for your needs.
1. Shorty Headers
Shorty headers, as the name suggests, are shorter than stock manifolds. They are designed to be a direct replacement for the factory exhaust manifold without requiring significant modifications to other exhaust components. They offer a moderate improvement in exhaust flow over stock manifolds.
- Pros:
- Direct bolt-on replacement for many applications.
- Easier to install than long tube headers.
- Good for mild performance gains.
- Usually less expensive.
- Cons:
- Performance gains are less dramatic than long tube headers.
- May not significantly improve exhaust scavenging.
2. Long Tube Headers
Long tube headers have much longer pipes extending from the engine. These longer pipes connect to a collector, which then leads to the rest of your exhaust system. The length and design of the pipes are optimized to improve exhaust scavenging – the process where the exhaust pulse from one cylinder helps pull the exhaust from another cylinder out.
- Pros:
- Offer the most significant horsepower and torque gains, especially at higher RPMs.
- Superior exhaust scavenging.
- Can provide a more aggressive exhaust note.
- Cons:
- More difficult and expensive to install.
- Often require modifications to other exhaust components (like the mid-pipe or catalytic converter).
- Can reduce ground clearance.
- May not be emissions compliant in all areas without specific catalytic converter setups.
- Generally more expensive.
3. Tri-Y Headers
Tri-Y headers are a bit of a hybrid. They have pipes that are joined in pairs early on, forming a “Y” shape, and then these pairs are joined again into another “Y” or a collector. The design aims to balance the low-end torque benefits of short headers with the high-end power of long tube headers. They offer a good compromise for street performance.
- Pros:
- Good balance of low-end torque and high-end horsepower.
- Smoother power band compared to some other designs.
- Can offer a distinct exhaust tone.
- Cons:
- Installation can be moderately complex.
- Performance gains might not be as extreme as well-designed long tube headers.
Materials and Coatings
The material and any coatings on your headers play a role in their durability, performance, and appearance.
- Mild Steel: This is the cheapest material. It’s prone to rust if not coated. Headers made of mild steel will likely need replacement sooner and can look unsightly if they corrode.
- Stainless Steel: This is a much better option for exhaust headers. Stainless steel is highly resistant to rust and corrosion, making it very durable, especially in harsh weather conditions. It also looks better for longer. There are different grades of stainless steel, with 304 stainless steel being a common and high-quality choice for exhaust components due to its excellent corrosion resistance and heat tolerance.
- Ceramic Coating: This is a heat-resistant coating applied to the outside of the headers. It helps to insulate the headers, keeping the heat inside the exhaust pipes. This can lead to slightly better performance because the cooler the surrounding engine bay is, the denser the air intake charge. It also protects the underlying metal from corrosion and can prevent the blueing or discoloration that high heat can cause.
- Chrome Plating: While often used for a shiny appearance, chrome plating is less common and less effective for headers than ceramic coating. It can be more susceptible to damage and discoloration from extreme heat.
Are Aftermarket Headers Worth It? Pros and Cons
Deciding if aftermarket headers are worth the investment involves weighing the potential benefits against the costs and drawbacks. Let’s break it down.
Pros of Aftermarket Headers:
- Increased Horsepower and Torque: This is the most significant benefit. Many dyno tests (tests that measure engine power) show gains of 5-15 horsepower or more, depending on the car and header type.
- Improved Engine Sound: They often give your car a sportier, more aggressive exhaust note.
- Enhanced Engine Breathing: Allows the engine to operate more efficiently.
- Potential for Better Fuel Economy: A less stressed engine can sometimes be more fuel-efficient, though this is often a secondary benefit.
- Reduced Weight (Sometimes): Aftermarket headers can sometimes be lighter than bulky factory cast iron manifolds.
- Aesthetics: Many aftermarket headers look much better under the hood than stock manifolds, especially if they are ceramic coated or made of polished stainless steel.
Cons of Aftermarket Headers:
| Factor | Consideration |
|---|---|
| Cost | Headers can range from $200 to $1,000+, depending on material, brand, and type. Installation costs can add another $200-$800+. |
| Installation Complexity | While shorty headers might be a DIY job for some, long tube headers often require specialized tools, lifting equipment, and potentially custom exhaust work, making professional installation recommended. Proper tools and a safe workspace are crucial for any exhaust work. |
| Emissions and Legality | In many regions, modifying or removing catalytic converters (which sometimes need to be relocated or replaced with headers) can be illegal and will cause your car to fail emissions tests. Always check local regulations. The EPA regulates emissions from vehicles. |
| Ground Clearance | Long tube headers, in particular, can hang lower than stock manifolds, potentially reducing ground clearance and increasing the risk of damage. |
| Compatibility Issues | Headers might not fit perfectly, sometimes requiring modifications to the exhaust system, fuel lines, or other components. |
| Noise Levels | While some appreciate a sportier sound, others might find aftermarket headers too loud for daily driving, especially in residential areas or for long commutes. |
| Potential for Check Engine Lights | Improper installation or changes in exhaust gas flow can sometimes trigger a “Check Engine” light, especially if the factory oxygen sensors are not positioned correctly or if the engine’s air-fuel ratio is thrown off significantly. |
Factors to Consider Before Buying
Before you take the plunge and buy aftermarket headers, think about these important points. This will help ensure you make the best choice for your specific situation and avoid common pitfalls.
1. Your Vehicle’s Needs and Goals
- What kind of car do you have? Some cars benefit more from header upgrades than others. For example, older cars with less efficient factory exhaust systems often see larger gains.
- What do you want to achieve? Are you looking for maximum horsepower for track days, a better sound for cruising, or a subtle improvement for everyday driving? Your goals will dictate the type of header you need.
- Daily driver vs. weekend warrior: If your car is your daily commuter, you might prioritize ease of installation, legality, and a less obtrusive sound. If it’s a weekend toy, you might be willing to make more compromises for performance.
2. Budget
Aftermarket headers are not cheap. Remember to factor in the cost of the headers themselves, shipping, potential taxes, and professional installation if you’re not doing it yourself. A complete exhaust system upgrade sometimes makes more sense financially than just headers alone.
3. Emissions Regulations and Legality
This is crucial. In many places, especially California and other states that follow its strict emissions standards, modifying your exhaust system can be illegal. This often means that headers not specifically designed to work with the factory catalytic converters (or with included high-flow cats) will cause your car to fail inspections. Always check your local laws and the manufacturer’s claims about emissions compliance.
The Specialty Equipment Market Association (SEMA) provides a wealth of information on vehicle modification laws and regulations, which can be invaluable for navigating these complexities.
4. Installation
Are you comfortable working on your car? Do you have the necessary tools and space? Some header installations are straightforward, while others can be extremely difficult, involving rusted bolts, tight spaces, and the need to lift the vehicle safely. If you’re unsure, budget for professional installation by a reputable mechanic.
5. Other Modifications
Headers are often part of a larger exhaust system upgrade. To get the most out of your new headers, you might also consider a high-flow catalytic converter, a less restrictive muffler, and a larger diameter exhaust pipe. These components work together. For example, installing high-performance headers and then attaching a very restrictive muffler will limit the airflow and reduce the potential gains.
Many performance upgrade specialists recommend considering a “cat-back” exhaust system in conjunction with headers. A cat-back system replaces everything from the catalytic converter back to the tailpipe. This complements header upgrades well. For instance, brands like Borla offer complete exhaust systems designed to integrate with aftermarket headers.
Installation Process: A General Overview
While specific steps vary greatly depending on your vehicle and the type of headers, the general process for replacing exhaust manifolds with headers involves:
- Safety First: Park the vehicle on a level surface and engage the parking brake. Use jack stands to securely support the vehicle if you need to lift it. Never work under a car supported only by a jack.
- Locate the Exhaust Manifolds: These are typically on the sides of the engine, connected to the cylinder heads, and feeding into the exhaust pipes.
- Disconnect Exhaust Hangers and Pipes: You’ll need to unbolt the downpipes (the pipes that connect from the manifolds to the rest of the exhaust system) from the manifolds. You might also need to unbolt or detach exhaust hangers supporting the system.
- Remove Heat Shields: Many factory manifolds have heat shields to protect surrounding components from extreme heat. These will need to be removed.
- Unbolt the Old Manifolds: Carefully unbolt the old exhaust manifolds from the cylinder heads. Be prepared for old, rusted bolts that can be difficult to remove. Penetrating oil can help.
- Clean the Mounting Surfaces: Once the old manifolds are off, thoroughly clean the mating surfaces on the cylinder heads. Any old gasket material or rust needs to be removed to ensure a proper seal with the new gaskets.
- Install New Gaskets and Headers: Position new exhaust gaskets onto the cylinder heads. Then, carefully install the new headers, aligning them with the bolt holes.
- Bolt Down the Headers: Tighten the header bolts evenly, working in a crisscross pattern. Torque them to the manufacturer’s specifications to ensure a good seal and prevent warping.
- Reattach Downpipes: Connect the downpipes to the new headers. You may need new gaskets for these connections as well.
- Reinstall Hangers and Shields: Reattach any exhaust hangers or heat shields that were removed.
- Check for Clearance: Ensure the new headers are not rubbing against any other engine components or the chassis.
- Start the Engine and Check for Leaks: After all connections are made, start the engine and listen for any exhaust leaks (a hissing or puffing sound). Leaks at the manifold flanges are common and indicate a poor seal.
For a detailed walkthrough specific to your make and model, consulting your vehicle’s repair manual or watching reputable online tutorials is highly recommended. Taking your car to a professional shop that specializes in exhaust work is often the safest and most efficient route.
Common Header Brands and Reputation
When considering aftermarket headers, you’ll encounter many brands, each with its own reputation for quality, performance, and price. Some of the most well-regarded brands in the industry include:
- Pypes Exhaust: Known for offering a great balance of performance and value, often with a focus on sound quality.
- Kooks Headers: A premium brand often chosen for high-performance applications, known for excellent fitment and significant power gains.
- American Racing Headers (ARH): Another top-tier brand, famous for their meticulous engineering and ability to maximize power, especially on American muscle cars.
- OBX Racing Sports: Offers a more budget-friendly option, often using stainless steel, and can provide decent performance improvements for the price, though fitment can sometimes be less precise than premium brands.
- Stainless Works: Produces high-quality stainless steel headers and exhaust systems, focusing on performance and durability.
When choosing a brand, research reviews specific to your vehicle model. What works well for one car might be different for another. Look for information on customer experiences regarding fitment, durability, and actual power gains.
Frequently Asked Questions (FAQ)
Here are answers to some common beginner questions about aftermarket exhaust headers.
Q1: Will aftermarket headers make my car illegal to drive on the street?
A: It depends on your local laws and the specific headers you choose. Many headers are not CARB (California Air Resources Board) compliant and may not be legal in states that follow California’s emissions standards. In other areas, they might be legal as long as they don’t involve removing your catalytic converters or significantly altering emissions.
