What is the whole story?
Did it run with more boost before you did this or that?
Just bought the car?
Touched the wastegate?
Would recommend to pressure test the whole system. Disconnect Silicone on the Turbo and pressure test from there into the combustion camber with 30psi.
Got the car about a year ago. It had a lot of issues and it took a lot of time to find and fix them all so it's ready for tuning. Had a fiasco with eurodyne, so my original read from the stock ECU is not usable. Customer support was unable to help and told me to "just run the stage 1 file as it's made for stock hardware". I have adapted that file as close to a stock bin as possible with the maps available to edit as my starting point.
Notable repairs on the engine include:
Full timing job including water pump and thermostat
Replacing valve cover gasket (victor reinz)
Replacing turbo to exhaust mani gasket (genuine)
Replacing crank position sensor (genuine)
Replacing cam position sensor (bosch)
Replacing PCV & PRV (034 motorsports)
Replacing engine mounts (034 left/right, ECS poly dogbone)
Replacing knock sensors (bosch)
Replacing wideband o2 sensor (bosch)
Replacing cat
Replacing intercooler as it had a hole in it
Carbon removal from cylinders as engine was detonating and pulling severe timing (used Carbon X)
New hardware was always used where required and torqued as per service manual.
I've probably missed a few, but that's the important stuff.
I have seen it make full boost/load previously. (Maybe ~5-6 months ago?) This was before I was able to fix/subdue the detonation issue this motor had, so I rarely went WOT. I don't have many logs from this time that show this unfortunately.
I am 100% sure the wastegate is untouched.
I'll rig something up for a leak test. I had it in a shop recently where they tested it and told me it was good. They weren't able to get much pressure in it though as they were using a smoke machine. I'll definitely get that done properly.
Get it back to stock
Its a hw issue (probably from dv or wg)
Yeah that's what I'm thinking. I've removed and inspected the DV and it seems to work properly. It has the correct spring in it as well (Green 5-15 psi according to Forge). I've got a file as close to stock as I can get it in Maestro. (see above for why I can't do true stock) I'll put that file on and post a log with that. I also have the stock DV. I can put that on and try it as well.