I have recently carried out the below using various guides for my AMK S3:
replaced my injector inserts
ultrasonically cleaned injectors and fpr
replaced injector o-rings
replaced inlet manifold gasket
removed and cleaned throttle body
replaced throttle body gasket
replaced both valve cover gaskets
replaced CCT gasket and half-moon - using tensioner tool
Put it all back together and now she's not starting. The engine turns over for less than a second, but generally sounds rough and produces the occasional pop (misfire?).
I have checked with VAG-COM and the only fault found was 16395 - 16395/P0011/000017 - Ross-Tech Wiki
I was able to clear the fault and it hasn't returned. I have tried starting it about 10 times, but don't want to keep trying unless I am making the problems worse.
Is anyone able to offer some words of wisdom? I hope so...