I've noticed that there are different ratios for FMUs, ie, 8:1, 12:1, 4:1, etc. I plan on running the manifold/turbo/downpipe from a Greddy 15g kit on my D16Z6 at the standard 5-5.5 (whatever) psi, and do my own fuel management, as it was only a partial used kit. What ratio should I use on the FMU? Also, should I upgrade my fuel pump if I only plan to stay between 5-7 psi?