Ok so I just got done replacing my CP3 with a new one that came off a LMM I think the build date was in mid 08. So now I still get the same problem that I had before I replaced the CP3 does anyone have any other ideas what it could be I did a log and it seams that my actual vs desired rail pressure is off. Do I need to change the tunning for the LMM regulator or what. Here is the log I did also.

 

oh and that is in stock tune

 

whats your fuel pressure to the cp3 jonothan? something is up maybe you have an injector/injectors returning too much fuel?