Invidia Downpipe Catted – 2008-2015 Mitsubishi Evo X

Catted Downpipe for the 2008-2015 Mitsubishi Evo X

The Invidia Catted Downpipe for the 2008-2015 Mitsubishi Evo X replaces the factory downpipe on the 4B11T platform with a high-flow stainless unit and integrated high-flow catalytic converter. The factory Evo X downpipe is one of the most restrictive components in the post-turbo exhaust path, replacing it produces the most noticeable single improvement in turbo response and power available from any exhaust modification on this platform.

DETAILS

• High-flow catalytic converter
• 304 stainless steel
• Improves turbo spool and throttle response
• Maintains emissions compliance

The 4B11T in the Evo X responds strongly to downpipe work because the factory unit is sized for noise and emissions compliance rather than flow. The Invidia high-flow catalyst eliminates the primary restriction while maintaining catalytic function. The improvement in turbo response is immediately felt on the first drive, boost builds more quickly, throttle response is sharper, and the mid-range where the Evo X does most of its work becomes more responsive.

This downpipe is the correct foundation for any Evo X exhaust build. Adding a cat-back to a stock downpipe leaves the primary restriction in place, addressing the downpipe first produces the larger improvement and makes every subsequent exhaust modification more effective.

What’s in the Box

• Catted downpipe
• High-flow catalytic converter (integrated)
• Gaskets
• Mounting hardware
• Installation instructions

Why Choose Invidia

Invidia has been manufacturing performance exhaust systems in Japan since 1999, and in that time they have built a reputation that carries real weight in the tuning community. Every system is manufactured using SUS304 stainless steel and mandrel-bent tubing, which eliminates the flow restrictions and weak points that crush-bent alternatives introduce at every corner. Their in-house engineering team designs each application from scratch rather than adapting a generic template, which is why Invidia fitment is consistently tighter than the competition. The result is an exhaust that installs cleanly, seals correctly, and lasts. Invidia backs their products with a quality standard that is visible in the finish, the weld quality, and the hardware, details that reflect over two decades of refining the same core manufacturing process.

The RallySport Take

We recommend the Evo X catted downpipe before any cat-back work because the return per dollar is significantly higher here. The 4B11T responds to this modification more than almost anything else you can do to the exhaust system. Fits the 2008-2015 Mitsubishi Lancer Evolution X with 4B11T. If you are building the Evo X for performance, start here.

Fitment