Has anyone know what taking out the mid resonator would do to my year 2000 S4? I've done it with my MK3 VR6 and it made it sound nice, I thought maybe give it a try and see what it does and could be like a temporary solution until I can save up for turboback? Anyobody done it before?

 

Do you mean the pre-cat? if so, this is basically what piggie pipes are. if you do decide to do this, move the 02 sensor behind the remaining cats.