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Shimming might not always do what you want.
Specific to mine at least, low rpm psi needed a lot of help and the hv pump does that without a corresponding increase on cold start and higher rpm. For example mine was running as low as 12psi at hot idle but 80psi on cold start up with std pump. I...
I didn't build it. Psi was just fine but the pump body itself starting leaking externally. I thought the same things dog did so I bought a std pump.
Intentional or not, the engine needs the hv at low rpm for pressure.
I found this out the hard way as well when I replaced an hv with std without thinking much of it.
My warm psi is much worse than you report. I put an hv back on it and we'll see how it is this weekend
I'm not familiar with snipers but is the software set to behave differently at 120* and 160*?
On my FAST MPI setup there are different temp thresholds and you can accidentally create conflicting commands.
Not sure the sniper gives so much control.
No they are not stock.
It's an adaptation of Ford ball bearing for people who don't want to set up tapered bearings.
Some say less friction for straight line.