finally got a new spark plug connector to fix the misfire after checking two audi dealers and a vw dealer. i ordered the part online from audi-auto-parts-store.com which at first appeared to be the wrong part, but must be a new design from bosch. the misfire is completely gone now, as is the slight hesitiation when requesting a lot of boost in high gears at low rpm's, which was present ever since i purchased the car.
installed neuspeed short throw shifter. installation took me about 4 hours because i didn't have the right tools ready (i thought i did when i started taking the car apart...) and i was having lots of problems getting to some of the bolts due to the previous fact. the c-clamp was very hard to get off without real circlip pliers. i got the old unit out, the new neuspeed linkage in, put it in the car, then read this article at audiworld and wanted to add the zip-tie to reduce play. so i took the unit back out, disassembled it, then spent 20 minutes looking around my house for a zip-tie. guess it would have helped to find this before taking the unit out. anyway, i put it back together without the zip-tie, then re-installed it in the car. the throw is much shorter and feels more solid. the knob sits about an inch lower as well.
brought the car to laurel once again to have them look at the rattling coming from the cat. they took about two hours just to tell me it was a rusted bolt and that it'd be an hour and a half of labor to fix it, which i'd have to pay for. i told them that i've had nothing but problems with the exhaust system and that i since i bought it from their dealership with it installed, i shouldn't have to pay to fix it. they sympathized and agreed to pay half of the labor, or eat $200 of the cost of installing a completely stock exhaust which they quoted at about $1000. i told them to just fix the bolt since i'd rather spend $1000 installing another aftermarket exhaust that fit better than the neuspeed (apr?) they then told me i'd have to come back next week to have the bolt cut since they didn't have any time to do it today (what was the point of making the service appointment?) i was given a filthy 1999 a4 2.8q tip as a loaner for the weekend.
