I have a 98 mustang gt 5 speed, cai, upr x pipe, and flows. I just put a engine out of another car because my old one was knocking. Same year engine and all,basically a short block. So I switched everything from the old engine to the new one, now when I start it, it will idle ok than start surging pretty bad and shaking around. New plugs are in it, tried driving it and it has no power... I data logged it earlier and the maf voltage is reading 0, also the fuel rail pressure and fuel source are all reading 0. I don't know where to go from here without just replacing things.