2017 F250 high boost, can you look at log and tune?

[Wayne Presley]

Customer has 2017 F250 that is running more boost than he remembers. I data logged the truck and the MAP pegs (or is unbelievably steady) at 255 kPa , dash display shows 2/3 the way to 40 psi. I've tuned 50+ gas cars with HPT but just starting to play with diesels. I have a stock 2017 F250 file to compare it with. If I swap the airflow>pressure control> boost limit and compressor 1 limits back to stock, will that give me stock boost pressures? Is 255 kPa the limit of the stock MAP sensor? And an overall opinion of this tune would be great also

asread.hpt
cruise2.hpl

[Wayne Presley]

96 views and nobody has answered any of the questions?

[HSKfab]

That's how it is in here. Like a nightclub everybody leaning against the wall, staring at each other. You may get an answer without a real answer if you're lucky.
The truck have any DTC's?

[Wayne Presley]

no DTC's, just the high boost showing on the dash. And still wondering if the MAP sensor pegs at 255 kPa.

[jetskier]

Customer has 2017 F250 that is running more boost than he remembers. I data logged the truck and the MAP pegs (or is unbelievably steady) at 255 kPa , dash display shows 2/3 the way to 40 psi. I've tuned 50+ gas cars with HPT but just starting to play with diesels. I have a stock 2017 F250 file to compare it with. If I swap the airflow>pressure control> boost limit and compressor 1 limits back to stock, will that give me stock boost pressures? Is 255 kPa the limit of the stock MAP sensor? And an overall opinion of this tune would be great also

If it's a stock turbo, I'd start with making a tune with all the turbo tables and limiters back to stock and see if it corrects itself. If it does, then start bringing the modified ones back one or two or three at a time until you find the one that causes the pressure spike again. Once you find table in question, compare it to stock and make changes from there.