Hey guys, just wanted to share a recent experience I had. I bought my car used and it always seemed a little "jumpy" and not as powerful as I thought it should have been. After doing some research I came across the topic of "diverter valves", learned how they are an intergral component of the turbo and etc. So i decided i was going to replace mine, maybe that would solve some problems. Yesterday I swung by the local Audi dealer and picked up a Bosch 710N. Got home and popped the hood to install it. (This sucker is located so deep in the engine in a tiny little area, it was a pain, but somehow I was able to work on it with only taking apart some of the plastic intake pieces) Anyways, as most of you know, the DV has three valves coming off it, two larger ones and a smaller vacuum tube that connected to the headers. Here is where the fun started. I grabbed a hold of the vacuum tube near the DV in my car and pulled on it a little to get some slack. Oddly, the tube seemed to pull easily and kept coming out as if it had tons of slack. ... All of a sudden, the end of the tube flys up in the air and im looking at it in my hand. THE DAMN VACUUM TUBE SNAPPED LONG AGO AND WASNT EVEN CONNECTED TO THE HEADERS! Turns out the tube was EXTREMMELY dry-rotted. Just bending it at any position caused it to snap in half and practically dissentegrate into dust. So in the end, i ran to the auto store. Picked up a new vacuum tube and clamps. Installed the new 710N DV. and my car now is twice as fast, and 5 times as smooth. Smoother shifts, smoother accel and decel. Smoother everything. What a day.