I specify here i have a DSG DQ250 mounted on the car.
Dude, that's so cool! I had no idea a DSG bolts to a 1.8T, that's a very interesting project. I just had a look at the self study program for that gearbox, I know nothing about these.
What's the mass of the DSG clutch/flywheel like in comparison to like a flex plate and torque converter or a typical dual mass flywheel and clutch? Were 1.8Ts ever offered with this transmission from VW/Audi? I imagine a DSG behaves differently enough to a torque converter automatic during transient load/rpm fluctuations that maybe it's contributing to your problem? I figure it's a question worth asking, I have no clue.
You should make a post in the project cars section, I'd love to follow your build, tao.
My car generally just acts weird around idle when load changes. It sounds like a KFMIOP/KFMIRL problem based on research I've done here. I've read plenty of explanations of how those maps relate here but it's not clicking for me. I just need to find the time to bash my head against the FR until it does.
Mine 'lopes' in a periodic fashion when the AC is on, or when creeping forward by slipping the clutch. I know the ECU is cracking the throttle because I can see fluctuations in manifold vacuum on the boost gauge, and I know the timing is fluctuating a lot. It actually will start knocking at idle if the weather is hot enough or sitting in a lot of traffic (!).
I hope I have time to get to this before the season is over for me, once they salt the roads I park my Golf until spring.