Did you ever figure this out? My p0087 code started when I installed the stage 2 pump from Burger. They sent me another stage 2 pump and it seemed to fix it. A week later I'm right back in the same boat. I think the cam roller was popping off track under the hpfp. I reinstalled the roller and pump a few times and everything seemed fine. No problems for almost a year. Now it's back again. I wouldn't even recommend the stage 2 hpfp to my enemies. $1,600 paperweight
I just dealt with this issue. I was getting p0087 codes out of the blue one day.
My trims were low (running rich) but I was seeing 0 high fuel pressure. The car would refuse to accelerate or build any boost.
Incredibly hard starts and etc.
I replaced the BMS Stage 2 HPFP with the OEM HPFP and the car fired back up without issue.
The BMS Stage 2 HPFP appeared to be mechanically sound:
- The plunger and spring moved freely
- The pump came up straight when loosened (it wasn't mounted at an angle)
- The cam lobe and cam follower looked practically brand new
My best guess at what went wrong is the control unit in the BMS Stage 2 HPFP failed and was reporting erratic fuel pressure.
Luckily there was no gas in the sump (I needed to do an oil change anyway so I drained it to confirm).
The BMS Stage 2 HPFP is wildly problematic, even down to the aluminum riser that has threads that strip out if you install the pump more than once.
