In a all motor B18c1 with a skunk2 intake manifold. What would the optimal throttle body size be? I also have a password air intake. I am not planning on turboing this motor, but would running a different size injector help me any. I am plannin on going with the hondata s300. I'm looking to squeeze a little more power out of this motor. So far, this is a very suprising little car.