I have flash my 2016 GDI with clubsport while I had the complete sport exhaust and the difference was stunning ! joy
After I change back to the standard silencer because it was way too loud, no any difference ! The still pull like with the sport one.
So for me clubsport remap + sport manifold and catalyst = perfect ! thumbs
Sport silencer not needed at all ! ooo

Dada,
Plus Six "Samantha" (the wooden witch)