Rblade

Stock RB20det unopened, no metal head gasket GTX2863 turbine Top mount exh manifold 570cc GTR R35 injectors Z32 AFM 255 lph Walbro internal fuel pump Ron97 fuel (we only have 95 and 97 here) Works FPR set at 4 bar FMIC APEXI Power FC Car tuned on Dynodynamics at 1 bar/ 14.5 psi boost.Output is 207hp / 155rwkw What you guys think, shouldn't i be getting at least 260hp on this setup ? Is it that much of a risk to go 18psi on boost without a metal head gasket..? Your honest opinions are very much appreciated