Product Details
Subaru Legacy GT Limited / GT spec.B 2009, Equal Length Stainless Steel Exhaust Header by PERRIN Performance®. Color: Gray. Header Coating: Uncoated. Create a smooth sounding exhaust note while increasing horsepower and torque with the PERRIN E4-Series Equal Length Header. The new PERRIN E4-Series Equal Length Header comes with collectors that have been designed for better exhaust flow while allowing the headers to be constructed much more accurately. The improved exhaust flow and more precise construction increases power and reliability. The new E4-Series also has a lower profile design, allowing for more ground clearance.
Notes
- Requires oil pan with header cutout, oil pickup tube, 2002-04 WRX oil cooler assembly, and 2002-04 WRX oil feed pipe.
Specifications
| Style: Equal Length |
| Header Material: Stainless Steel |
Features
- Designed to deliver trouble-free, consistent performance
- Right for your vehicle and lifestyle
- Made from high-quality materials for ultimate durability
- Manufactured to meet or exceed strict quality requirements
The equal length design of the PERRIN E4-Series header produces smooth, balanced exhaust flow from the heads to the turbocharger giving you the best of two worlds: quicker turbo response as well as more horsepower and torque throughout the entire RPM band. While designed to fit to the factory up-pipe, our header will also mate with an aftermarket up-pipe that fits factory header and turbo, as well as any rotated turbo kits compatible with the factory header.
You won't see grossly over-sized tubing to make our header "look" impressive, this just slows exhaust gas flow and reduces response. This header uses 1.5" primary tubing that is expanded at the flange to fit the Subaru exhaust port size. This size tubing is perfectly designed for cars up to about 400WHP. You can see from our dyno graphs that there is a significant gain in horsepower and torque across the entire RPM band compared to an OEM Subaru header.
PERRIN Flanges are CNC machined from 304 stainless steel and counterbored on the back side to make smoother transitions. Flange ports are sized properly to ensure exhaust coming out of the head has a smooth, unobstructed path to the tubes. The ports are not over-ported which would cause gaskets to burn out quickly. The tubes are expanded inside the flanges for a perfect fit and smooth flow of exhaust gases to the tubes.
Due to its equal length design, the PERRIN header will alter the tone of your exhaust. The exhaust pulses from the engine are equalized and spread out producing a smoother, more refined sound. A byproduct of the equalization is a significant reduction in the volume of your exhaust sound. Some describe the sound as being similar to an inline four cylinder engine exhaust.
Most headers collect on the passenger side of the engine, and due to space constraints, are not equal length and compromise exhaust flow. Because we use the added room provided by the oil pan (only on 2.5L turbo pans), we can create a smooth transition of the header primaries to the collectors, and collectors to up-pipe, providing more power and torque then the competition.
PERRIN Performance® is a pioneer in premium quality products for the aftermarket industry. Striving to foster innovative technology along with the use of traditional crafts, PERRIN hits the sweet spot in every aspect of performance transformation for a car, from suspension to engine performance and down to brakes. PERRIN specializes in building innovative, reliable and efficient products for Subaru, Scion, and Nissan owners. It offers an extensive selection of the finest upgrades designed to boost performance to a whole new level. Perrin's wide range of top-grade engine parts, exterior and body parts, fuel system parts, steering parts, gauges and accessories, gaskets and hardware is what you need to modify your vehicle to the core and enjoy unforgettable riding experience every time behind the wheel.