So i just finished up my MPFI swap on my 90' Civic LX. The motor is a D16Y7 that i bought from a buddy that had the stock PM5 dual point manifold on it. So i did the MPFI swap on it. But i have ran into a problem. My computer is running in limp mode, and flashing a code 4 (crank sensor). Therefore i can't go past 3200 rpm. I have used an OBD2 LX dizzy, and just used the boomslang OBD0 to OBD2 wiring how to. I know all of my wiring is correct i have gone over it 10 times, and even had some buddies go over it. Now i have done this before, with no problem, but i have no idea what the problem could be. I have been told to switch around the big white to the small white, and the small white wire to the big white. And the car doesn't even start. I went ahead and switch out the internals in the dizzy, and still nothing. If someone has an idea please help me out. By the way i have been using a PM6 ecu. It does the same thing with the PR4 ecu. Thanks!