I haven't seen direct port, as I mentioned I am doing. Has anyone done it that you have seen?
Spraying it in the tb spacer is one thing . There is no increased resistance from the built pressure. The few people I have talked to that are boosted and on the bottle say the same thing as nitrous express and that is for the fuel solenoid on the nitrous setup, it requires a rrfpr, not our fuel system.
Here is how it was explained to me. If you have 58 psi fuel rail at 0 psi air intake, you effectively have 58 psi fuel flowing into the runners. If you increase boost to 16 psi, your effective fuel psi is 42. This means at the top end you will be going lean. You can't tune that injector to produce more fuel without changing pills or using g a rrfpr. What it does you do is through I will a large pill and set the regulator lower. So say 42 psi fuel at 0 psi air. By the time you are 16 psi air, the regulator is at 58 psi, making the effective fuel psi 42. Make sense or am I blabbering again?