I assume something went wrong the install a few weeks ago with updating the Cobb AP, uninstalling, installing again etc. Uninstalled the Cobb AP and then flshed the E30 v12 map again, now car feels great again.
Targeted E50 Mods: K&N drop-in (Stock airbox, Ram Air 3" Catless Dps, Full Exhaust, Wagner EVO 2 7" FMIC, Stg2 LPFP, Turbosmart Diverter Valves, VRSF Chargepipe