Hi all As mentioned above Audi believe that i have an issue with my chain timing. the issue is that the car wont rev above 5500rpm, literally just dies, the ECU cuts all power, the engine is smooth all they up to that point. we have changed the DV, camshaft and crankshaft sensors and MAF and now i am at this point. no fault codes are being shown and Audi believe its not being picked it. They want £516 to investigate further after paying them £216 for the initial investigation!!!!! does anyone have any experience in this matter and would it cause the mentioned symptoms?