I had mine remapped, after a few test runs we couldn't get more than 0.8PSI of boost (up from 0.6PSI).
OK so it turned out the actuator needed turning anti-clockwise twice (720 degrees), bingo we have 1PSI of boost, but dropping to 0.9PSI at peak revs.
This was achieved in D only, in S we only got 0.9PSI of boost, so D is faster than S. S is only there to hold the revs higher for going round fast corners.
We aren't sure at this stage if the issue is the Diverter Valve not holding boost or perhaps there is a torque limit on the DQ200 DSG gearbox.
I have since had the Diverter Valve changed for a revision "G". Word of warning, the old one (piston style) fell to bits as I took it out. I can't explain how bad this could've been as a bit almost fell in to the turbo...
I am due to go back in the coming months to see if this has worked and for part 2 of my remap...the DQ200 gearbox.
Another word of warning, Skoda put tuners protection on my ECU, AND the gearbox! Now as I got my car from a main dealer in 2021 it was quite up to date for the ECU revision and bypassing the tuners protection was easy enough. At the time we couldn't bypass the tuners protection on the DQ200, however we now have the tools to do this. So part 2 is to unlock the DQ200, firmware update it as it was 3 revisions out of date at the time (which means the dealer did not update the DSG when I bought it in 2021. Now the DQ200 gearbox can be remapped for quicker gear changes, better clamping etc. but not entirely sure if I want to go down that route just yet. I want to see if the new diverter valve in combination with an updated DSG gearbox can hold 1PSI of boost.
We could've gone higher in terms of boost but then the inlet temps would've just become too high and we would've had to have dumped more fuel in. Currently fuel economy is very good (when you're driving sensibly). On the motorway it's fantastic.
I suppose we're after some other numbers here, unfortunately I didn't test beforehand but 0-60MPH was done in 8 seconds flat after several tests via the OBD2 port. Factory sheet says 9.5 but I believe the car is quicker than that by default so...
Oh I'm new here BTW! Hello! I have had my car since January 2021 and I have been closely following these forums for the better part of a decade.