{"product_id":"cts-turbo-high-flow-catted-downpipe-mk8-gti","title":"CTS Turbo EVO4 High Flow Catted Downpipe for Volkswagen MK8 GTI","description":"\u003c!-- more --\u003e\n\u003cdiv style=\"max-width: 100%; line-height: 1.6; font-size: 16px;\"\u003e\n\u003cp\u003eUpgrade your Volkswagen MK8 GTI with the CTS Turbo EVO4 High Flow Catted Downpipe. This downpipe was engineered to improve exhaust flow, reduce backpressure, and unlock additional horsepower and torque.\u003c\/p\u003e\n\u003cp\u003eThe factory downpipe is restrictive and limits performance, especially on tuned vehicles. This high-flow catted downpipe allows exhaust gases to flow more efficiently while maintaining a catalytic converter for a more refined setup compared to race (catless) options.\u003c\/p\u003e\n\u003ch3\u003eQuick Fitment Overview\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with Volkswagen MK8\/MK8.5 GTI\u003c\/li\u003e\n\u003cli\u003eHigh-flow catted downpipe for improved performance\u003c\/li\u003e\n\u003cli\u003eReduces backpressure and improves turbo response\u003c\/li\u003e\n\u003cli\u003eDirect-fit installation using factory mounting locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe CTS Turbo EVO4 High Flow Catted Downpipe is constructed from high-quality stainless steel and features a 3.5\" cast downpipe flange paired with mandrel-bent 3\" tubing to maximize exhaust flow.\u003c\/p\u003e\n\u003cp\u003eThe integrated high-flow catalytic converter reduces exhaust restriction compared to the factory unit, allowing your engine to breathe more efficiently while maintaining a more street-friendly setup than a catless downpipe.\u003c\/p\u003e\n\u003cp\u003eThis design helps reduce turbo lag and improve throttle response, delivering noticeable gains in horsepower and torque especially when paired with ECU tuning.\u003c\/p\u003e\n\u003cp\u003ePrecision engineered with factory mounting locations, this downpipe installs cleanly and includes a removable reducer for compatibility with both factory and aftermarket exhaust systems.\u003c\/p\u003e\n\u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3.5\" cast stainless steel downpipe flange\u003c\/li\u003e\n\u003cli\u003eMandrel-bent 3\" stainless steel exhaust tubing\u003c\/li\u003e\n\u003cli\u003eHigh-flow catalytic converter for improved exhaust flow\u003c\/li\u003e\n\u003cli\u003eReduces backpressure and turbo lag\u003c\/li\u003e\n\u003cli\u003eImproves horsepower and torque, especially on tuned vehicles\u003c\/li\u003e\n\u003cli\u003e100% TIG-welded construction for durability\u003c\/li\u003e\n\u003cli\u003eFactory mounting locations for proper fitment\u003c\/li\u003e\n\u003cli\u003eIncludes removable reducer for exhaust compatibility\u003c\/li\u003e\n\u003cli\u003eEnhanced exhaust sound with reduced drone compared to catless systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolkswagen MK8\/MK8.5 GTI (2022+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Not compatible with OPF\/GPF-equipped vehicles.\u003c\/p\u003e\n\u003cp\u003eMost 2022 and newer vehicles are equipped with updated “tamper-proof” downpipe hangers, which can make removing the factory rubber hanger more difficult. To simplify installation, we recommend sourcing an earlier-style hanger (Part Number: 1K0253144AE) from your preferred OEM parts supplier.\u003c\/p\u003e\n\u003cp\u003eInstalling this product may trigger a Check Engine Light (CEL). Proper engine tuning software is required to address this. Always confirm compatibility and requirements with your tuner prior to installation.\u003c\/p\u003e\n\u003ch2\u003eInstallation and Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended\u003c\/li\u003e\n\u003cli\u003eStage 2 ECU tuning required to prevent check engine light\u003c\/li\u003e\n\u003cli\u003eSome vehicles may have tamper-proof downpipe hangers that require replacement\u003c\/li\u003e\n\u003cli\u003eInspect exhaust connections and ensure proper sealing during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended Upgrades\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-flow air intake\u003c\/li\u003e\n\u003cli\u003ePerformance intercooler\u003c\/li\u003e\n\u003cli\u003eTurbo inlet upgrade\u003c\/li\u003e\n\u003cli\u003eCatback exhaust system\u003c\/li\u003e\n\u003cli\u003eECU tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003eQ: What is the difference between a catted and catless downpipe?\u003cbr\u003eA: A catted downpipe includes a high-flow catalytic converter, offering improved performance while maintaining a more refined exhaust setup compared to a catless system.\u003c\/p\u003e\n\u003cp\u003eQ: Does this downpipe require tuning?\u003cbr\u003eA: Yes. Stage 2 ECU tuning is required to avoid a check engine light.\u003c\/p\u003e\n\u003cp\u003eQ: Will this increase exhaust sound?\u003cbr\u003eA: Yes. It produces a more aggressive exhaust tone while remaining quieter than a catless downpipe.\u003c\/p\u003e\n\u003ch2\u003eShop With Confidence\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExpert fitment support available\u003c\/li\u003e\n\u003cli\u003eTrusted performance brands\u003c\/li\u003e\n\u003cli\u003eFast and free shipping\u003c\/li\u003e\n\u003cli\u003eWe not only price match but also beat our competitors’ prices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"CTS Turbo","offers":[{"title":"Default Title","offer_id":46934516367529,"sku":"EXH-DP-0055-CAT","price":584.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6673\/files\/CTSTurboEVO4HighFlowCattedDownpipeforVolkswagenMK8_MK8.5GTI_2022_-FASTuning.webp?v=1774498640","url":"https:\/\/www.fastuningstore.com\/products\/cts-turbo-high-flow-catted-downpipe-mk8-gti","provider":"FAS Tuning ","version":"1.0","type":"link"}