the exhaust is from the donor car, it is a custom job with 2.5" and strait from the cats (ill be deleting) to a 2in 2out magnaflow and then two tail sections that go to either side of the bumper. ill post a pic of it. very straight with only two bends each side, i may need to modify for the B6 but shouldnt be too bad. I may add a resinator where the cats were depending on the sound. i plan on adding flanges to the DP's for a "test pipe" to replace the main cats, that way when I goto the track I can swap the test pipe for a open dump off the DP's that exits behind the front tires. more flow and noise what do you think? ill see if EPL can do a mode for the open dump if it helps or do you think it wont matter as far as tune?