CTS Turbo - B9 Audi A4 2.0T Catback Exhaust System (2017-2024)

Installed this GFB diverter valve to eliminate the OEM plastic one all together that are prone to failing. I also spent the little more instead of rebuilding the bottom of the OEM that GFB offers but doesn’t clear all cars. BOV option (any brand) can cause car to have lights & running rich issues if not tuned asap so this was the best option for me to pair with my neuspeed intake. Plug and play harness & works great ! Can tell has less slop from day to day traffic & daily driving.

This intake sounds amazing at low rpms ! Definitely using some more gas cause it’s hard to keep foot off the throttle lol. Was a tight fit on an 2014 Audi TT Quattro S Line. Engine cover does touch against the intake tubing but fits overall pretty well.

The side markers were very nice upgrade’s. I love them 😍

Some slight modifications to the car and the cold air heat shield was needed but otherwise it fit great. Can really hear her breath now!

Love my new side markers - very clean looking and unique in how they flash when turning left or right. The only suggestion I’d make is provide instructions for both installing them and for being very careful with the wire once you disconnect the old light housing Left side went in ok, but I lost the right side into the fender black hole which required me to remove the tire and unscrew most of the lining so I could find the wire!

No issues, popped right in and look near original

Quality and fitment are great. Very easy replacement of the OEM unit. Includes the 2 rubber gaskets.

Replacement for the original one, 2004 Audi TT

Perfect fit, I love it!!
Arrived on time and packaged very well.

Courtesy from the start to finish!

Thanks

Needed the mid-pipe fast and was concerned about it coming from Canada, but it spent less than a day in customs. Ordered Wed afternoon. Got it the following Tuesday mid-day UPS Global. As some told me on a GTR forum, it makes the exhaust sound a little quieter, which is fine with me. Still sounds great at full turbo PSI. Price was less than 50% of other comparable products, so great value all around.

The bushing fit perfectly and I did notice a firmer feel when I used my car at an Autox event.
I had the whole front subframe out, easy access to the steering rack while I was in there.

At 16-years in, the originals had become pitted and scruffy. These new OEM ones look, well, like new! Really tidies up the car's look.

Ordered a throttle body spacer nearly a year ago from CTS Turbo. TT Stuff reached out once this replacement became available, and I had it in a couple of weeks. Highly recommend working with these guys. Email replies were never more than a day away.