Mods seems alright to me. Like what Nismoid mention, I had stock injectors, fuel pump, afms, dumps, intercooler, cams and airbox but only made 255awkw at 1.15bar which is around 16.5psi. Only mods I had were Catco Cat, HKS Front Pipe, Trust Exhaust, PFC and PFC Boost Controller Kit. And the original plan was to run close to 20psi but for some reason the boost keeps dropping at around 1.2bar (18psi) and can only hold at 1.15bar. If you can run 20psi, probably wouldnt be the same problem I'm having. Maybe its the turbo for your case?