Here's what you get when you mix an aircraft/aerospace engineer (*Note the tell tale black socks) who has a little to much time on his hands; with a VW that needs something more than simple turbocharging.
Now here's the first run, prior to getting everything dialed in...
As you can see, the carburation was a little rich
Oh, time to add a smidgin of safety...
...and re-adjust the carburator...
Now thats what I'm talkin about, baby!
The net result...