Hi guys, recently purchased a '12 plate A7 BiTDI due to needing a big comfy auto but with a bit of power and I have always liked the look of the A7 so jumped in. I did have a friend who I have known for over a decade, and had trusted him with his previous work, put a generic flash map on it soon after I purchased it. This was the only power/engine modification that I had done. Fast forward five months and I hear a loud whine under acceleration (not the wife) and low ish power.. still drives okay with zero smoke or lights on the dash or DTCs stored. I like to tinker with cars and have about average knowledge so thought I would take a brief look for any obvious issues with the intake / turbo side of things. The airbox and intake pipe looked fine and no holes or damage, so I look into the turbo and see this... As you can imagine my heart sank. So.. I have had that map taken off, had two people out to check it.. both say different things. Personally I feel it has over-boosted and possibly fouled the inside of the housing, there is a bit of play in the shaft. I have explored a few options, Audi would like £4,850 JUST for the turbos. That is a no go. Company I got the A7 from say use the Warranty, but I've looked into it and long story short - useless. The only option for me is to pay myself. I have purchased a very low mileage second hand BiTDI turbo setup, all other gaskets I'd need from Audi too. I'll get this fitted by a professional, all checked over and also having a Wagner intercooler fitted too. Once this is sorted I'll be heading down to the Legendary BSR for a few power additions. I am not looking for diagnosis or being told off for generic maps, just sharing my experience so far!