CTS Turbo 2018+ Audi SQ5 V6T 3.0T High-Flow Cat

CTS Turbo B9 Audi SQ5 High-Flow Cat is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts. Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back-purged to ensure years of reliable performance. In addition to unleashing the power and performance of your 3.0T, the CTS Audi SQ5 High-Flow Cat will make your vehicle sound like an S-car really should. When installed with factory exhaust it produces a sporty growl with much more pronounced exhaust "crackle" on downshift. While up-shifting you will enjoy a confident "braappp!" as you bang through all 8 gears. The sound will be even louder if you already have an aftermarket exhaust system. Product Details:

• Includes 200cell sport catalytic converter
• Designed and tested on a real car in the real world
• Cast T304 stainless steel, TIG welded back-purged construction
• Replaces restrictive factory catalytic converter
• Great power upgrade with uncompromising performance
• Incredible sporty exhaust sound, subtle when cruising
• No drone with factory exhaust
• Installation hardware is included

Fitment:

• 2018+ B9 Audi SQ5 3.oT

To remove the CEL that will occur, proper stage 2 tuning software must be used.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications

SQ5

Make	Model	Engine	Years
AUDI	SQ5		2018–2023
AUDI	SQ5 (B9)		2018–2023

Fitment data last updated: 2026-07-29