Could someone please help - Datalog

[AutoEuphoria]

I've been having a lot of issues with my car lately...I don't really know where to look at this point. I've checked the vacuum lines and everything seems to be right (can't find any leaks). The fuel pressure in this log is what really scares me. I'm not sure if the low boost is a function of the low fuel pressure, or if the low fuel pressure is a function of a loss of boost. Any help would be greatly appreciated.

A little hard to read the boost scale...the top number is 15psi. The second from the top is 10psi. Below that is 5psi, and then 0psi. On this log, the boost builds to ~15psi pretty quickly, then gradually falls off to 0-1psi around 4500 RPM

As you can see, I didn't get much KR. AFR was good the whole way. Fuel pressure dropped WAY down, as did boost. This was done in third gear. Again, I can't tell if my fuel pressure is low and that is causing the ECU to drop the boost to stay safe, or if I have a big boost leak somewhere and that is causing the ECU to compensate by lowering the fuel pressure. I do have upgraded fuel pump internals, but I was never seeing pressures this low before. I was, however, running a MAP clamp and MBC before, so I am not sure how that "tricked" the ECU.

Current mods:
- CAI
- Catless DP
- Catless MP
- silicone boost tubes
- turbo inlet pipe

 

[AutoEuphoria]

Someone has to have some idea...I need to figure this out ASAP.

 

[Speed3Rookie]

are the fp internals "installed"?
i have never seen a map like this where the boost dropped off so violently.

 

[AutoEuphoria]

yeah, I installed the fuel pump internals at the beginning of the summer.

I think I may have found the problem, though...tearing through things today I found that the RKM BPV I had somehow failed...it must have been a huge boost leak. You can visibly see where the rubber diaphragm is misaligned, or possibly torn. The plunger does not retract fully and it's an open path out. Huge boost leak, basically. I put the stock BPV back on, and it cured a little of the problem, but it's still kind of there. I am actually going to make another thread right now with a little bit different focus.