yeah abit far... the lower the comp the more boost... thicker head gasket would work thou it would be a weak point for it to blow! maybe get ur piston heads skimmed 40 thou to lower the comp a bit! then u should see 190bhp maybe 16psi! I wreckon theres a few peeps got around 190 bhp on a standard bottom end thou it just depends how reliable u want it! i wreckon around 190bhp on a standard bottom end is about tops really!