CTS Turbo B9 Audi A4/A5/Allroad High Flow Cat Downpipe
SKU: 34056540330

CTS Turbo B9 Audi A4/A5/Allroad High Flow Cat Downpipe

Sale price$123.30 Regular price$137.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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For Your Every Summer RSVP, with Code: SUMMER15

Description

CTS Turbo B9 Audi A4/A5/Allroad High Flow Cat DownpipeThe CTS B9 A4 A5 ALLROAD 1. 8T&2. 0T high flow cat is the premier high flow cat for your Audi A4 A5 ALLROAD 1. 8T & 2. 0T. Our high flow cat is designed to seamlessly fit in place of your restrictive stock catalytic converter, which is situated immediately after the turbocharger. We have redesigned our test pipe and high flow cat to both retain the same exterior shape and design for customers wanting to have a stealthy test pipe install. Our high flow

The CTS B9 A4/A5/ALLROAD 1.8T&2.0T high flow cat is the premier high flow cat for your Audi A4/A5/ALLROAD 1.8T & 2.0T. Our high flow cat is designed to seamlessly fit in place of your restrictive stock catalytic converter, which is situated immediately after the turbocharger. We have redesigned our test pipe and high flow cat to both retain the same exterior shape and design for customers wanting to have a stealthy test pipe install. Our high flow cat features 3″ stainless steel piping, one 02 sensor bung. Substantial power gains, improved exhaust flow and a more throaty sound are the main benefits from installing our high flow cat.  Upon inspection you will notice a flare which is nearly 4″, this flare then tapers to 3″ and is designed to allow for optimal flow as the exhaust gas transitions from the turbocharger to the high flow cat.  In addition to being one of the best bang for the buck performance upgrades for B9 owners our high flow cat is also very attractive piece.  Each 3″ test pipe is hand tig welded.

Product Details:
– T304 stainless steel construction
– Fully tig welded design
– Throaty sound
– Great power upgrade

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

Use of stage 2 software upgrade is strongly recommended.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34056540330

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Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Serta Pillows
Style: Side Sleeper, Pattern Name: King
They’re very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
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Verified Purchase
Jackalope
Charlottesville, US
★★★★★ 3
Great quality but big
Style: Side Sleeper, Pattern Name: King
These pillows seem to be very good quality. I couldn’t wait to try them. I soon realized that they’re very thick & too high for my neck. I can push the pillow down but it doesn’t stay so I’d say they’re too firm for me & don’t support the neck properly because of the height.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2025
R
Verified Purchase
Ron W
Whiting, US
★★★★★ 5
my fav now after using 50+ pillows
Style: Back Sleeper, Pattern Name: King
I have always struggled to find the perfect pillow, and so far I have had 50+ pillows. Personally, I like my pillow to be on thinner side as I look for more support for my neck. This is my first time buying pillows online, because I like to physically touch and feel the firmness and thickness before I purchase my pillows. I am so glad I did it! These pillows are just PERFECT for me! Perfect firmness, perfect thickness and perfect material. One thing I suggest is that be extra cautious when you open the package. These pillows were rolled and put in a relatively thin shipping bag, so when you open with sharp objects be careful not to cut your new favorite pillows! I let the pillows sit for about 48 hours before I started using them, but I assume you don't have to wait that long. Overall, I am very happy with my first online pillow purchase with Serta!
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Reviewed in the United States on April 1, 2020
E
Verified Purchase
Erika
Birmingham, US
★★★★★ 2
Not worth it
Style: Side Sleeper, Pattern Name: King
Feel nice and fluffy for couple months, then go flat
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Reviewed in the United States on September 5, 2025
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Verified Purchase
Nadar
Massapequa, US
★★★★★ 1
14% polyester filling
Style: Side Sleeper, Pattern Name: Jumbo
It has 14% polyester filling. The description is not complete in amazon.
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Reviewed in the United States on January 5, 2026

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