just pulled the trigger and ordered my BBK long tube ceramic coated headers ships Monday we'll i need mid pipes? And how much horsepower should I expect to get on my 15 rt A8 i well have the cats deleted allso ty
It should come with mids and 2
O2 sensor extension. I dropped almost 6 tenths and 4 mph when I installed mine (untuned). Not everybody experience that but I did. They were well worth the money for me and the sound is crazy.