ok i have a 00 si with a build b16 in it it has a drp stage 5 head on it stroker crank n 13 to 1 custom pistons i have web stage 2 cams skunk manifold 255 fuel pump 68mm tb i was just want to no y the car wont rev passed 45grand it has popped the head gasket i dnt think that wood b the problem just let me no what u guys think thanks for the help its also on a stock ecu