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Air and Fuel› Air Cleaners, Filters, Intakes and Components

CST

High-Flow Catalytic Converter

Name: High-Flow Catalytic Converter
Brand: CST
SKU: CTS-EXH-DP-0014-CAT

$549.99 $533.49 Save $16.50

SKU: CTS-EXH-DP-0014-CAT

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

Description

Designed as a direct replacement for the restrictive factory downpipe, this component is crucial for unlocking additional horsepower, especially after ECU tuning. The product is precision fabricated using T304 seamless stainless steel tubing and features a CNC-machined turbine discharge flange for a secure fit. Construction highlights include 100% TIG welding with back purging for maximum strength and durability, along with T304 stainless steel flanges and an O2 bung. The modular design allows for straightforward installation of the catalytic converter, and smooth transitions throughout the tubing ensure optimal exhaust gas flow. Installation requires Stage 2 software to prevent a check engine light. While a CEL eliminator can reduce the possibility of a catalytic efficiency code, it is not 100% effective. This high-flow catalytic converter is compatible with 2015+ VW GTI 2.0TSI models (including Performance Pack and facelift versions) and 2019+ VW GLI. It is also designed for MK3 Audi TT (FWD only).

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	CST
Part Number	CTS-EXH-DP-0014-CAT
Category	Exhaust

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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