I bought this cobra last week wrecked. It came with a kb 2.4, stock internals, kN filter, mafia programmer, kb boost a fuel system, short shifter, air fuel guage, boost guage and borlla manifold back exhuast. It has been pro. tuned. I am wondering if better MAf ir throttle body will help and get more hp. it has 42lb injectors do i go bigger? let me know what you think thanks