Not to sure where to go from here. I have been having a rail pressure issue and need help figuring out what the possibilities could be
i did flash in a factory tune and seems to have some of the same issue just doesn't seem as bad
the problem i'm having is that the rail pressure seems to drop 4-5k psi bellow commanded when i go to wot
on lower throttle it seems fine it only happens when i go wot
the truck is a 2003 250hp 5 speed truck
injectors have around 150000 km
everything else has 608000 km
fuel filter get changed every oil change
around 12000 km intervals
fca was replaced last year
i have a rail plug installed
cant find any obvious leaks on the high pressure side
i am planning on installing a fuel pressure gauge for the lift pump in the very near future
not to sure if my cp3 is getting tired
seems to have started in the last 4-5 months
i have had this set up run 26k psi rail pressure before with out any issues
this is a screenshot of what's happening, the log file and the tune being run
hp tuners log screenshot.png
21-07-02 20-10-06 clean up tune 25.hpl
2003 personal truck (cleaning up tune) 25.hpt
this is factory tune with the pedal map changed and some of the limiters gone
Log:21-07-03 09-20-08 Factory optimized tune.hpl
Tune:2003 stock file optimized (rail pressure test).hpt