{"product_id":"catalytic-converter-with-resonator-and-muffler-for-mitsubishi-lancer-2009-2011-2-0l-2-4l","title":"Catalytic Converter with Resonator and Muffler for Mitsubishi Lancer (2009-2011) 2.0L 2.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Catalytic Converter with Resonator and Muffler for 2009-2011 Mitsubishi Lancer (CY4A\/CY5A)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit catalytic converter with resonator and rear muffler replaces degraded emissions and silencing hardware on the 2009-2011 Mitsubishi Lancer to restore factory backpressure, eliminate exhaust leaks, and clear emissions fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mitsubishi Lancer Exhaust Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust assemblies on the \u003cstrong\u003eCY4A\u003c\/strong\u003e and \u003cstrong\u003eCY5A\u003c\/strong\u003e platforms suffer from structural corrosion along thin-wall mild steel tubing, especially at the underbody welded seams and rear flange interfaces. Road salt and repeated thermal expansion lead to flange rot, acoustic perforation, and internal ceramic washcoat sintering within the catalytic converter core. This breakdown results in catalyst efficiency diagnostic trouble codes (such as P0420), cabin exhaust intrusion, elevated cabin drone, and disrupted exhaust scavenging dynamics that degrade low-end engine torque.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive underbody assembly provides a complete, bolt-in exhaust restoration. Engineered with a corrosion-resistant stainless steel converter body housing a high-flow ceramic substrate, it ensures optimal catalyst light-off and reliable Federal EPA emissions compliance. Precision robotic TIG-welded 2-bolt solid flanges match OEM exhaust hang points without requiring cutting or sleeve welding. The integrated center resonator cancels resonant standing waves, while the direct-fit rear muffler restores factory sound attenuation and balanced exhaust flow for naturally aspirated \u003cstrong\u003e4B11\u003c\/strong\u003e and \u003cstrong\u003e4B12\u003c\/strong\u003e powertrains.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Underbody Catalytic Converter with Integrated Resonator Assembly (89-inch overall length)\u003c\/li\u003e\n  \u003cli\u003e1 Rear Muffler Assembly\u003c\/li\u003e\n  \u003cli\u003eExhaust Clamps\u003c\/li\u003e\n  \u003cli\u003eInlet and Outlet Flange Gaskets\u003c\/li\u003e\n  \u003cli\u003eMounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2009-2011 Mitsubishi Lancer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4B11 (2.0L), 4B12 (2.4L) \/ CY4A, CY5A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e152–168 hp \/ 146–167 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e645773\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009-2011 Mitsubishi Lancer 2.0L 4-Cylinder Naturally Aspirated (DE, ES)\u003c\/li\u003e\n  \u003cli\u003e2009-2011 Mitsubishi Lancer 2.4L 4-Cylinder Naturally Aspirated (GTS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the CY4A\/CY5A Lancer?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2009-2011 Mitsubishi Lancer equipped with the naturally aspirated \u003cstrong\u003e4B11\u003c\/strong\u003e and \u003cstrong\u003e4B12\u003c\/strong\u003e engines. \u003cstrong\u003eIt does NOT fit turbocharged Lancer Ralliart or Lancer Evolution models, and is not legal for sale or use in California, Colorado, New York, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre existing O2 sensor bungs included on the assembly?\u003c\/h4\u003e\n\u003cp\u003eYes, the assembly features two integrated O2 sensor ports that accept original-equipment oxygen sensors without wiring harness modification.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mitsubishi Caliber\u003c\/h3\u003e\n\u003cp\u003eMaintain proper Japanese sport sedan dynamics by matching factory acoustic isolation, zero-leak flange sealing, and compliant backpressure characteristics across the entire powerband.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67599170502904,"sku":"DS-E9FF6W05X","price":313.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-with-resonator-and-muffler-for-mitsubishi-lancer-2009-2011-2-0l-2-4l-1.jpg?v=1791475119","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-with-resonator-and-muffler-for-mitsubishi-lancer-2009-2011-2-0l-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}