Hello.
Im working with e39 193hp.
At the moment got gt2260v from e60 and 1800bar rail sensor.
Problem is with fuel efficiency.
At the moment 236hp but rail valve is ~80% even with 1400bar at rail.
Pre supply is good, all the time 4.0-3.9bar.
I think there is problem with valve or high pressure pump.
Whats the max efficiency of good pump with 1600-1700rail?
I want to max out this gt2260.
I dont want to put cp3r90
Is the stock pump cp1r70?
If yes it should be able to even 300+
But if not, is there any way to make it hybrid?
Any ideas how to check is pump or valve problem, without changing them for test?
Regards