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Thanks... good to know. I thought they had a good reputation with these engines?

Is 200 psi a realistic safe limit on the line pressure? I spoke with Pittsburgh Power about getting the injectors flowed.... I would be fine with spending money on injectors if I could drop pressure for more reliability.

I also have low rail pressure at idle & cruise, the pressure only climbs high when I'm at full throttle.... but it only sees about 150 psi at 15-1600 instead of the full 200 psi.

Thanks for info. Those holes are plugged on my engine.

I'm ok with the top end power, but I would like to get more in the mid range. At 1500-1600, I'm seeing under 150 psi pressure & about 7# boost with EGT's in the 800's. Here is where it needs more to pull through & spool up, otherwise you try to hold that speed with it floored or downshift &...

I turned in the fuel screw slightly to reduce pressure to 200. Mine is 25 psi per 1/4 turn. I'm at 2 turns out. My EGT's are only around 900 max pre-turbo under boost. Yes, it is only driven empty & I can see it get more boost in higher gears due to load. But on hills around here it is seeing...

The screw/button relationship you stated contradicts what I was reading... I was understanding it was the opposite. Still trying to get my thoughts sorted out. I have no coolers at this time. Due to the small injectors in the NHC-250, I am only seeing 14-15# boost, but it doesn't max until...

If I understand correctly the fuel button controls your fuel pressure, but the fuel screw can change the flow/pressure also... I was trying to follow the circuits, but detailed really info is hard to come by. Am i understanding it correctly that the screw in the throttle shaft can allow more...