Borla Cat back exhaust. Tips shown here. Very nice sound. I also have an ATR downpipe. The noise level at 2500rpm is a just a bit on the loud side. I get so many compliments on the sound of this system. I would recommend it to anyone!
Here is a quicktime file of the sound of the borla exhaust at 22K 8bit. 1meg.
Here is a the same quicktime file of the sound of the borla exhaus at higher quality 22K 16bit. 2meg.