Just got done putting the shims in the fuel pressure regulator and wiring up the knob and box, started it up and the thing threw 6 codes and started idling like I had a huge cam in it. All harnesses were tight and clips were all locked. If I take the box out of the loop and just run the factory wire on the back of the fuel rail, it idles fine with no problems. Does this mean I have a problem with the box. The codes it was throwing was fuel pressure too low at rail, crank sensor, cam sensor, egt, and two others I don't remember. Cleared the codes and not throwing any codes with the MP-8 box bypassed. Let me know if any of you guys have any ideas. Thanks in advance.