My final version of a turbocharged 1.6ts has been a success, with the help of another forum member on the ecu front. The car runs like stock and hasn't let me down for 3000 miles so far.
The car runs the MAF in the pressure area, it is located in the same place as stock, so no delay to compensate for air path. Mine setup is airfilter-turbo-intercooler-BOV-MAF-TB. My only recommendation for anybody thinking about doing a project like this is to have a ecu solution ready, it is the biggest problem you will have by far. The car is running a Garrett ballbearing unit (GT28) @ 11psi and when I'm feeling brave 15psi. Economy is almost standard at around 350miles on a tank. It's great fun to drive mid range acceleration is something else.