hi tony d the only way to make those numbers is with alcohol injection , adittional injectors, high octane gas, and more than 25 psi of boost my numbers was at 18 p.s.i. please the only thing you has to do is don´t compare me with other people and give me credit and that,s It mynumbers are awsome stock ecu 370 svo injector with fmu I´have a friend of mine he make 420 hp with n/a 280zx ecu at 28 psi but he use alcohol injection and 440 cc supra injectors.