Catback Exhaust for Mitsubishi Lancer Evolution (2008-2015) 2.0L

High-Flow Catback Exhaust for 2008-2015 Mitsubishi Lancer Evolution

What it Does: The Catback Exhaust replaces the restrictive factory exhaust piping and baffled mufflers on the 2008-2015 Mitsubishi Lancer Evolution to reduce exhaust backpressure, optimize turbo spool, and enhance exhaust gas scavenging.

The Stock Mitsubishi Lancer Evolution Bottleneck and Exhaust Restriction

The factory exhaust on the CZ4A platform features small-diameter, crush-bent mild steel piping routing into a heavy, triple-chambered baffled muffler. Under increased boost levels, this design generates excessive pre-turbine and post-turbine backpressure, trapping thermal energy in the cylinder head and turbocharger turbine housing. The resulting exhaust gas reversion impedes volumetric efficiency and compounds heat soak on the all-aluminum 4B11T engine during sustained load.

The Engineering Solution

Fabricated from mandrel-bent stainless steel, this cat-back system maximizes flow velocity and reduces backpressure downstream of the catalytic converter. Smooth radius bends eliminate internal cross-sectional choke points, optimizing exhaust gas laminar flow. Precision TIG-welded joints ensure structural integrity under aggressive vibrational loads, while heavy-duty, pre-welded OE-style hangers and thick CNC-machined flanges bolt directly to the factory mounting points without modification. High-temp hardware and composite gaskets guarantee leak-free seal integrity under severe thermal cycling.

Technical Specifications

Compatibility

• 2008-2015 Mitsubishi Lancer Evolution X (10) 2.0L (GSR, MR)

Frequently Asked Questions

Does this fit the CZ4A Lancer Evolution?
Yes, this is a direct fit for the 2008-2015 Mitsubishi Lancer Evolution equipped with the 4B11T engine.

Will installing this catback exhaust trigger a Check Engine Light (CEL)?
No, because this system bolts directly behind the catalytic converter, it does not alter secondary O2 sensor readings or catalyst efficiency monitors.

The Mitsubishi JDM Performance Standard

Engineered to withstand track use and sustained boost conditions, this system delivers an aggressive, resonant turbo exhaust note while freeing up restriction to support future engine modifications and recalibrations.