Howdy folks again. My 2000 quattro 2.5 a6tdi still ocasionally struggles to rev past 3000rpm. It just seems to hit a brick wall. 1 month ago I removed stripped and cleaned the turbo. The vanes and gubbins were covered in soot, this.doesn't seemed to have rectified problem. I have serviced and replaced the fuel filter also. I haven't had it connected to a comp yet. I'm from teesside and was wondering anyone recommend a garage (apart from Audi dealership). I have already removed and cleaned amf sensor but thinking I may need to replace.