Well I have one fuel hose connected to the fpr then that hose comes back out into the fuel rail. I got a hose connected to the inlet nipple by the throttle body going tto a T piece connecting to fpr and dump valve. Make sure the fpr is on the return side of the fuel flow out of the rail. The fpr needs a take off on the manifold, after the t/b, the original take off is by the coilpack, right side of the inlet, above the servo take off.