FITMENT

  • 2008 Subaru Impreza WRX/STI EJ25
  • 2009 Subaru Impreza WRX/STI EJ25
  • 2010 Subaru Impreza WRX/STI EJ25
  • 2011 Subaru Impreza WRX/STI EJ25
  • 2012 Subaru Impreza WRX/STI EJ25
  • 2013 Subaru Impreza WRX/STI EJ25
  • 2014 Subaru Impreza WRX/STI EJ25
  • 2015 Subaru Impreza WRX/STI EJ25
  • 2016 Subaru Impreza WRX/STI EJ25
  • 2017 Subaru Impreza WRX/STI EJ25

PACKAGE INCLUDES

1*Exhaust Header 
1*Pipe 
4*Gasket
1 Pack Screws & Nuts

Can exhaust manifolds be replaced by headers?

Yes, headers can effectively replace traditional exhaust manifolds in an engine's exhaust system, offering several performance advantages. Unlike the single-piece design of exhaust manifolds, headers have separate pipes for each cylinder. This design improves exhaust flow and reduces backpressure, resulting in increased horsepower and torque.

Advantages of Headers:

Improved Exhaust Flow: Each cylinder has its own separate pipe in exhaust headers, allowing for smoother and more efficient exhaust flow. This reduces backpressure on the engine, enhancing overall performance.
Increased Horsepower and Torque: With reduced backpressure, the engine can "breathe" better, leading to increased horsepower and torque output, especially at higher RPMs.
Enhanced Sound: Exhaust headers can alter the exhaust note, typically producing a deeper and more aggressive sound compared to stock exhaust manifolds.
Replacing Exhaust Manifolds:
Upon installation, headers replace traditional exhaust manifolds. Instead of a single-piece manifold, headers have separate pipes for each cylinder, which then merge into a collector that directs the exhaust gases into the rest of the exhaust system.

Brand DynoVox SKU QMP-HW00499
Body Material High Quality Stainless Steel Color Silver
Weight 7.78kg Comply with Factory Testing Standards Yes
Type Exhaust Header Warranty 3 Year
Package Size Length: 29.13in Width: 13.38in Height: 7.28in 
Installation Location Engine
Item Condition New

NOTE

While anyone with basic mechanical knowledge can install an Exhaust Header, it is recommended that it be installed by a professional mechanic to ensure proper installation and avoid any potential problems.

DISCLAIMER

1. By installing this product onto your vehicle, you assume all risk and liability associated with its use.2. It is your responsibility to make sure your Vehicle complies with all federal, state, and local emissions laws. Federal and many state and local laws prohibit the removal, modification, or rendering inoperative of any part of the design affecting emissions or safety on motor vehicles used on a public street or highway Violation may result in a fine of up to $ 32,500 per vehicle ( or possibly higher depending on changes in the law ). All civil penalties and fines for removing your vehicle emissions equipment are the sole responsibility of the end user.3. Due to its high-performance nature, this product may void the vehicle manufacturer's warranty.4. DynoVox is not responsible for the misuse of its products By installing this product, you release DynoVox of any liability associated with its use.5. Depending on where you live, restrictions may apply. Check all applicable laws before installing or using.6. The purchaser and end-user release, indemnities, discharges, and holds harmless DynoVox from any claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. DynoVox will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines caused by the use.

QUESTIONS ON SHIPPING POLICY

1. Do you ship internationally?
NO, We have our warehouses in the United States and we only ship within the United States. We might sell to other countries in the near future though.
2. How much is the shipping?
DynoVox offers Free Shipping on all items to all clients in the United States. If in the future, there is another country available for shopping, we might charge some shipping fees based on the shipping conditions then.
3. What is your shipping method?
We normally offer fast express shipping by FedEx, UPS, and DHL. And we will provide detailed shipping info to our clients.
4. What is the shipping time?
The time frame of order delivery is divided into two parts:
Processing time: 1-3 Business days
Shipping time: US: 3-5 Business day
If an order is placed on a weekend or legal holiday, the order will be dispatched in the following working days. A tracking number will be provided once the items are arranged.
Please note that these delivery times may be affected by natural conditions such as holidays and weather, and may also be delayed due to customs authorities in your country. We are not responsible for delays caused by customs authorities.
Please ensure all delivery information is correct. If there is incorrect and/or missing information, we may be required to contact you to update the delivery information, which may cause delays in delivering your order. Delays may also occur as a result of customs clearance (if the package is sent from our oversea warehouse).

 

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Frequently asked questions
What do exhaust headers do?
Like exhaust manifolds, headers are designed to route exhaust gases from the engine to the exhaust system. The primary difference is that headers create less exhaust backpressure than exhaust manifolds, thereby allowing the engine to breathe more easily. Headers are usually made from thin-walled stainless steel tubing.
Do exhaust headers increase horsepower?
Headers can increase horsepower, improve the flow rate of exhaust or improve your car's sound. No matter what you're looking for to enhance your engine system, you can find an exhaust header to suit your needs. Getting exhaust headers for your car can: Improve exhaust flow rate.
Do exhaust headers increase sound?
While aftermarket headers won't make your car louder, they will improve your overall sound quality. If you were to compare the sound of a revving engine with an exhaust manifold versus a high-performance header, you'd be able to notice the tonal difference immediately.
How do exhaust headers improve performance?
During the exhaust stroke in the engine, the piston pushes exhaust gases out of the cylinder. If the piston has to push against back pressure, the engine wastes power. Headers let the engine push exhaust gases out of the cylinders more easily. An exhaust header gives each cylinder its own separate exhaust pipe.
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