On the incorrect flow fault, this sounds like the evap system purge valve has failed open. This can cause over revving issues. Changed mine last week (I had an intermittent flow fault) and the car would rev up slightly at idle and occasionally throw a CEL. Now all is well again. I have a DSG GTI too.
Hope this helps.
Thanks mate, think I've read this somewhere before where the canister has failed so may have to buy a new one of those as this error keeps flagging up.