Rail pressure ramp at startup

[arinkuddy]

I have some white smoke at startup so I was playing with increasing my rail pressure and on this tune I set idle to a flat 70MPa. I noticed this strange ramping of the desired rail pressure. The ramp appears to be a constant slope at about 2.5MPa/S. I was wondering if anyone has ever run into this or knows if there is a way to increase the slope of this ramp.
22435

log in picture: 22437

stock: 22436

[tylerltr450]

I have some white smoke at startup so I was playing with increasing my rail pressure and on this tune I set idle to a flat 70MPa. I noticed this strange ramping of the desired rail pressure. The ramp appears to be a constant slope at about 2.5MPa/S. I was wondering if anyone has ever run into this or knows if there is a way to increase the slope of this ramp.
22435

log in picture: 22437

stock: 22436

Arin, Do you think it is related to air temp coming across the sensors, which may increase fuel demand which could could consider kicking in high idle?

Good to see you are still playing with tunes!!!

[arinkuddy]

It really looks like a time based ramp function to me. Just thought it was kinda odd and I don't see the purpose.
What I was really wondering was if other OSs did this. I've been using my current OS for a few years now because it has high idle enabled.