Boost Pegging At Highway Speeds

[spudgi]

Good evening!
As the title states, I have a deleted 2019 F350 dually and have recently been having issues with my tune. I am unsure what may be causing the spike, but it's either torque-related or mechanical. However, I don't know enough about this just yet. It always occurs at highway speeds, but the speed I don't think is the factor. I have been going 70, and it has happened, but most of the time, it's around 80 but it's always around the same desired torque. I have reverted to stock and then pushed the tune back to the truck just in case a parameter wasn't erased/overwritten. I was able to catch this on a log but I'm afraid I didn't include all the necessary parameters. In the log, the desired boost and actual boost were fairly close (1psi+-) then once it hit the perfect spot (~500ft-lb torque) the actual psi and desired are (20psi+) apart then settled to the desired being (3si+). The truck bogs down significantly during this. Turning the truck on and off does not fix it however, it takes a complete flash to be able to drive again. I cleaned my MAP sensor thinking this was the cause, but while it was dirty, it did not fix the issue. I will include my log down below. Open to all suggestions, I literally stay awake at night of things that could cause this and I am all out of options.

Thank you!
Caleb

Pegged.hpl

[Lennydmaxguy]

Can you post the tune?

[spudgi]

Can you post the tune?

It's a lightweight tune. People work hard to get their hands on them.

[Lennydmaxguy]

It's a lightweight tune. People work hard to get their hands on them.

Understood. But without the tune, it's hard to help...

[spudgi]

I sent you an IM.

[spudgi]

Could the Injection Base Quantity Maps be causing this if it doesn't line up correctly with the Torque Based Fuel maps?

[spudgi]

If anyone looks at the log, it seems to me that its almost like its reading from a different table. The desired torque stays consistent with the pedal but its almost like its reading the wrong column. Im just lost and have run out of ideas. I have a binary file that I can load on through my Bully Dog and this issue doesn't happen.

[dieselpitstop]

i think you should try a different tune.

[spudgi]

i think you should try a different tune.

I think I figured it out. I put my stock fuel tables back in replaced my MAP sensor and so far it hasn't done it. Could it have been my MAP all along? If fueling is out of wack does it cause this?

[spudgi]

i think you should try a different tune.

Nevermind it did it again... How can I find a clean lightweight base file?

[HSKfab]

Nevermind it did it again... How can I find a clean lightweight base file?

I noticed your vane position is stuck at 2.5%. You could have a bad turbo or vgt solenoid. Or the tune. Can you post it up? If you have forscan you can reset vgt adaptive tables. You can also use it to manually actuate the vgt and see if it's actually moving.

[spudgi]

I noticed your vane position is stuck at 2.5%. You could have a bad turbo or vgt solenoid. Or the tune. Can you post it up? If you have forscan you can reset vgt adaptive tables. You can also use it to manually actuate the vgt and see if it's actually moving.

I think I mapped the wrong one. I have since changed it to Turbo A Vane Position, which reads the correct percentage. I might have had it on Turbo B. If it was stuck at 2% I don't think I would be making any boost correct?

[spudgi]

Just an update. A nice guy by the name of Jeremy sent me a file to try but unfortunately, it did the same thing.
My thoughts now are that there are tables that HPT cannot read/erase and those are being left on the ECU and when I hit that mark, it reads to those invisible tables. Shot in the dark at this point haha.
I have noticed it is when the tables shift from warming up to operating temperature. The highway is 4 minutes from my house and its about a mile or two after getting on that it does it. After that, even after loading the exact same tune, it doesn't happen.
If this switching is the case, I don't really want to lock the fuel tables in to only read from one set because the temperatures where I live very greatly, I did just modify and load a tune on that has the Torque to Fuel Quantity Correction DISABLED to see if it's overcorrecting itself.
Has anyone disabled this correction? What exactly does it stop itself from doing?

[HSKfab]

Just an update. A nice guy by the name of Jeremy sent me a file to try but unfortunately, it did the same thing.
My thoughts now are that there are tables that HPT cannot read/erase and those are being left on the ECU and when I hit that mark, it reads to those invisible tables. Shot in the dark at this point haha.
I have noticed it is when the tables shift from warming up to operating temperature. The highway is 4 minutes from my house and its about a mile or two after getting on that it does it. After that, even after loading the exact same tune, it doesn't happen.
If this switching is the case, I don't really want to lock the fuel tables in to only read from one set because the temperatures where I live very greatly, I did just modify and load a tune on that has the Torque to Fuel Quantity Correction DISABLED to see if it's overcorrecting itself.
Has anyone disabled this correction? What exactly does it stop itself from doing?

You shouldn't have to touch wave correction. And after you trying different tunes I was leaning more towards a mechanical issue but I can't see your file so I'm not sure what you have going on. I would also try making every single table identical. I run all identical tables. Where I live temps can be in the teens in the winter, and 120 in the summer. Never had issues.

[spudgi]

I sent you a PM.

[spudgi]

I think I was right about the fuel table switching! Today I limited my torque until the oil temp got to operating temperature and it didn't over-boost!!! I also matched all the X and Y axes in my boost setpoints and boost control tables. From the stock axes, there were two tables in Mode 4 (I think Mode 4 are the warmup tables) that didn't match the reast. Not sure which one did the trick but I will only count this as a win after the third attempt. But sure does feel nice not stopping on the highway to reload a tune!

OilTemp.png
NoPeg.hpl

I will keep you all updated in the event someone else encounters this issue.

[spudgi]

ITS FIXED! I reached out to Joe and he was able to look at the tables you need User Defined Perimeters built out to look at, and my tables were all maxed out. He was able to bring those back to stock-ish and this time for sure the truck is running better than it has in a long time!

Big thank you to all who reached out and gave me help! This community is amazing!