ECS Tuning knocked it out of the park with this Audi B9 S4 3.0T Valved Exhaust System. Part of my Stage 3 build, this non-resonated T304 stainless steal TIG welded exhaust created the race inspired sounds I was looking for. This full cat back system retains the active exhaust valves to manage sound output. It's comfortable when cruising around in Comfort mode, and super rowdy in the Dynamic sport mode. If you love crisp pops and bangs, especially on E85 with a hybrid turbo, you're going to love the crisp crackles this produces. When combined with the 034 Racing Catalyst and The Turbo Engineers TTE710 turbo I think this cat-back sounds incredible.

ECS B9 Valved Exhaust - https://bit.ly/ecsb9valvedexhaust

Milwaukee M12 1/2" Ratchet - https://amzn.to/41xjxuh

The following production gear was used to make this video:

Nikon Z6 Mirrorless & NIKKOR Z 24-70mm f/4 - https://amzn.to/3syYuYn
Atomos Ninja V Recorder - https://amzn.to/3bECMfi
Samsung SSD 860 EVO 1TB - https://amzn.to/3nGdDmZ
SMALLRIG Camera Cage Z6 - https://amzn.to/3qyB5pw
SMALLRIG Side Wooden Handle Grip - https://amzn.to/3su299x
SMALLRIG Top Handle Grip - https://amzn.to/2Lz3U4L
SMALLRIG Articulating Magic Arm - https://amzn.to/3ifjXka
SMALLRIG HDMI Cable Clamp - https://amzn.to/38I6RZu
Thin Mini HDMI Cable - https://amzn.to/3oMKx6y
DJI Mic Wireless Lav System - https://amzn.to/41sr6Tn
Shure MVL Lav Mic - https://amzn.to/42yUx6U

As an Amazon Associate and ECS Tuning Affiliate I earn from qualifying purchases. You don't have to purchase the specific items I'm linking to in order to help the channel at no added cost to you!

00:00 Introduction
00:22 Removing Down Pipes
01:43 Belly Pan Removal
02:13 Loosen Downpipe Supports
02:55 Removing Downpipes Part 2
03:08 Removing Mufflers
04:28 Drop X-Pipe & Down Pipes
05:52 Installing ECS X-Pipe & Down Pipes
07:08 Installing ECS Mufflers
08:34 Secure ECS Down Pipes
09:56 Connecting Down Pipe Supports
10:29 Belly Pan Installation
10:40 Align & Torque ECS Cat-Back
11:19 Exhaust Sound Comparision
12:54 Final Thoughts

#ecstuning #exhaust #catbackexhaust #catback #s4