S2 r33 instockish form ie stock turbo, exhaust,cooler, good condition motor/coils and and piggy back make around 20kw more than s1. Mine makes 205rwkw on 9.5psi. What fuel you using, any additives?, what sparkplug heat rating, any oil in intake piping, did they cal the tps setting properly for the safc, could be afm.
Sucks but it will get there!