IE Catback Exhaust System For Audi B9/B9.5 S4

Catback Exhaust System

I’m loving the new pipes. They bring the car to life and enhance all the engine and turbo sounds, giving it a superb deep growl. The product comes with what it looks like two different types of clamps to choose from in order to attach the system to the mid pipes. One set provides for a perfect air-tight fit. The other set didn’t really work for me, as I kept getting a leak. The good thing is that you can choose the best fit for your configuration.

Just what was needed.

After a terrible experience with ECS Tuning and their inability to provide a correct exhaust, this was exactly what was needed to get this car back on the road!

B9 S4 IE cat-back review

I’m IE stage 3 plus on the TTE710 and run the E70 file daily just for reference for customers. The quality of the exhaust is great. I was just a little surprised that although this is not a valved exhaust, it didn’t come with a weathering kit to plug up the lines so I need to figure that out on my own. The sound is excellent and when you put it into comfort the pops, still turn off as that seems that’s part of the tune itself not the valves, which is good. The only thing I did not like are the exhaust clamps for the tips since they hang out and are noticeable from the rear. I may just need to readjust on my side, but hopefully i.e. can point me in the right direction with both weatherproofing the lines and better ways to clamp the exhaust tips.