I'm rocking stock internals 233.4bhp 210ftlb 1bar of boost mapped my tuning devlopments on emanage blue ewg set up. I use a Toyo sports front mount cut up one of the pipes to suit td04
Only problem I ever had was on a colt and the slave cylinder packed up I couldn't get any gears and the pedal wouldn't move hope you get it sorted pal. May sound silly but did you bleed the system enough when you change the fluid ?