Clutch's fine, installed it all new as the car was converted to manual. I'll also swap the diffs from stock 3.91 to 3.64 (are allready arrived) for better fuel economy on autobahn.

The other issue are the gaskets on intake - I feel the car leaks some power above 4000 rpm. The vanos gaskets will be also replaced next week, then I'll change the spark plugs, spark cables, ignition coils, crank sensor, camshaft sensors, bigger injectors, ccv membrane etc. Then the car will be dynoed just to know everything works fine, before the SC will be installed.