Needed a new o2 sensor so I looked around a bit. The 06A906262Q part is about $100 and has a very long wire (maybe 2 feet longer than the TT225's original pre-cat o2 wire).
This alternative sensor (Bosch 16109 / Audi 06A 906 262 F ) is considerabily cheaper ($60 from Amazon with free shipping, link below) and only about 2 inches longer than the original 225 sensor. The only downsides is that you have to cut off a little bump on the connector which only take a few seconds with a razor. Oh, and the connector is orange/brown instead of black, but who cares...
I Checked block 30 after installing the sensor and voila: 111. Also checked fuel trims on block 32 and everything is within spec. the sensor works great!
Audi part# 06A906262F Bosch part# 16109
Notice the protrusion circled in red. It can be removed within seconds with a common razor...