What is the primary benefit of a high-flow catalytic converter?

A high-flow catalytic converter allows exhaust gases to exit the engine more freely than a standard factory unit. This reduction in restriction can lead to improved horsepower and torque, and a quicker turbocharger spool.

What material is this down-pipe made from and why is it important?

This down-pipe is constructed from T304 stainless steel. This material is chosen for its excellent resistance to corrosion and its ability to withstand the high temperatures generated by the exhaust system, ensuring longevity.

What should I consider before installing this down-pipe?

This down-pipe is not CARB approved and cannot be shipped to California. It is recommended to have new exhaust gaskets and hardware available, as these are typically replaced during installation for a proper seal.

Invidia Down-Pipe w/ High Flow Cat HS08SW1DOCB

Name: Invidia 08-19 WRX/STI Down-Pipe w/ High Flow Cat
Brand: Invidia
Price: 1023.59 USD
Availability: InStock

Invidia 08-19 WRX/STI Down-Pipe w/ High Flow Cat

$1023.59

Only 5 left in stock

Invidia 08-19 WRX/STI Down-Pipe w/ High Flow Cat

Key Features

Fits 2008-2019 Subaru WRX and STI.
Constructed from durable T304 stainless steel for corrosion resistance.
Features a 3-inch diameter, mandrel-bent tubing for smooth exhaust flow.
Includes a high-flow catalytic converter to improve exhaust gas passage.
Designed for direct bolt-on installation to the turbocharger and exhaust system.
Not CARB approved; cannot be shipped to California.

This down-pipe is designed to fit 2008-2019 Subaru WRX and STI models. Please verify fitment for your specific vehicle before purchase.

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Product Details

This Invidia down-pipe features a 3-inch diameter, mandrel-bent tubing constructed from T304 stainless steel. This material choice is key because it resists corrosion and handles the high temperatures found in the exhaust system, ensuring a long service life. The pipe is designed to connect directly to your 2008-2019 Subaru WRX or STI's turbocharger and the rest of your exhaust system, making installation more straightforward than custom setups.

At the heart of this down-pipe is a high-flow catalytic converter. Unlike restrictive factory converters, this unit is designed to allow exhaust gases to pass through more freely. This improved flow can lead to a noticeable increase in horsepower and torque, especially when paired with other performance modifications. The mandrel bends in the tubing ensure that the diameter stays consistent throughout the pipe, preventing bottlenecks and further aiding exhaust gas scavenging. This attention to smooth flow helps the turbocharger spool up faster and reduces backpressure, contributing to better overall engine performance.

When installing this down-pipe, be aware that it is not CARB approved and cannot be shipped to California due to emissions regulations. It's designed as a direct replacement for the factory down-pipe, simplifying the installation process. You'll likely want to have new exhaust gaskets and hardware on hand, as these are often replaced during this type of job. This part is a significant upgrade for enthusiasts looking to unlock more power and improve the sound of their WRX or STI.