OK, still having some probs with my car. 1st problem is boost - its erratic and the car seems underpowered. I have replaced the TIP as I had a split in one of the branch nipples - and now I've found another shagged pipe. It comes directly off the top of the throttle body (rubber, 90deg bend - into a metal pipe which goes over the engine toward the back somewhere). What is this pipe for ? I tried to describe it to Audi parts desk and I might as well have been talking to a giraffe. No sense at all. Does anyone have any ideas /and/or part numbers ? Or any suggestions as to if I could replace it with samco hose all the way across the engine? 2nd problem - Engine management light still on - I have 1 fault code on the ECU which is 16497 intake temp sensor G42 signal too high I took out the sensor last week and cleaned all the black crud off it, and took it back to my mate at the garage today to try to clear the code. It came straight back on. I've ordered a new sensor from Audi (£36 !!!) which will be here tomorrow. Im asking you guys what could be causing the intake air temperature to be too high ? If the air comes from the turbo, through the intercoolers and straight into the inlet manifold then could it just be the intercoolers blocked ? I'm startin to get very annoyed with this car. Thanks very much in advance.