PID experimenting

[Snakebitten]

I'm not exactly sure why Ford programmed both the PID and the dash gauge to show ~14-15psi in EV mode on the Powerboost.

They do NOT do the same with the 3.5 Ecoboost.

So I don't believe it has anything to do with atmospheric pressure. I would really like to know if Ford has actually done anything at all regarding oiling the Powerboost differently than they do the non hybrid 3.5 Ecoboost. But I haven't found anything obvious or specific.

I have used the same Ngauge (HPTuner) in my Gen13 3.5 Ecoboost and both of my Powerboosts. The running oil pressure is almost identical on all 3 trucks except that the Powerboost currently is more sensitive to load requests triggering the high pressure stage.

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[HammaMan]

The reason for the 15 psi in electric with engine off is because the gauge is not compensating for atmospheric pressure. atmospheric pressure is around 14.7 psi at sea level. this is also why the dash gauge does not completly go away in electric mode. In shorter terms the gauge reads PSIA not PSIG. If you where to hook up a mechanical psi gauge to the engine the oil pressure would be about 15 psi less than what this pid reads.

The oil pressure has been viewable in FDRS and my early observations was that it's an absolute pressure sensor and not vs ambient as I was getting ~14.1 which coincides w/ my altitude. It can also be viewed against the MAP sensor which would have the same value.

 

[HammaMan]

I think I only understand a small part of your answer, but thanks for the explanation. I asked Google's BARD what A and B were in the Oil Life % calculation when the answer is 54%. BARD gave me an answer, even explaining how it arrived at the answer, but I don't think its answer is correct.

With the equation broken down simply, it's obvious there's multiple correct answers. However if A = 0 then there's one. From code interpreter...

 

[oneinch]

Would the equation (((A*256)+B)*0.1450377377)-15 correct my reading?

It may be tough to see, but I added "( <existing equation> )-15" to the equation.

 

[fordtruckman2003]

Would the equation (((A*256)+B)*0.1450377377)-15 correct my reading?

It may be tough to see, but I added "( <existing equation> )-15" to the equation.

If using Torque app then use BAR0() function to get atmospheric psi reading from truck.

(((A*256)+B)*0.1450377377)-BAR0()

OBDLink does not support this function, but might have another way to get the same result.

Torque App equation help...
https://wiki.torque-bhp.com/view/Equations

 

[oneinch]

@fordtruckman2003 , I added BARO() to the equation and the pressure reads 0 without the engine running. I'm going to run with this.

Now I'm curious, what kind of oil pressures should I be seeing from the Powerboost engine?

 

[Snakebitten]

For the last 7 years, the 3.5 Ecoboost has been designed to be low-load 25-35psi, and high load 65-75psi.
(viscosity and oil temperature can vary the psi)

That hasn't changed in any of the 4 trucks I have had the same tuner in.

 

[fordtruckman2003]

For the last 7 years, the 3.5 Ecoboost has been designed to be low-load 25-35psi, and high load 65-75psi.
(viscosity and oil temperature can vary the psi)

That hasn't changed in any of the 4 trucks I have had the same tuner in.

With or without atmospheric pressure?


I think I understand how to get atmospheric pressure in OBDLink equations. Functions are not the same as Torque. I'll have to test it another night.

 

[Snakebitten]

I doubt that the HPTuners Ngauge is reporting anything but PSI beyond atmospheric 0, similar to an analog gauge.

The PID you sniffed out for me from Forscan appears to report a very similar oil pressure value. (in OBDLink)

 

[PPK]

The PID as specified works in ODB Fusion... on a '22 502A with a 2.7 engine i am happy to report. What a find!!!

I am appreciative of the PID Ninja that found this gem of information.. i kind of gave up making a nice display 2 months after i got the truck because the oil pressure was the ONE item i really needed...

I am much obliged and grateful for this shared nugget. Thank you!

I actually can't believe it.....

 

[Snakebitten]

The PID as specified works in ODB Fusion... on a '22 502A with a 2.7 engine i am happy to report. What a find!!!

I am appreciative of the PID Ninja that found this gem of information.. i kind of gave up making a nice display 2 months after i got the truck because the oil pressure was the ONE item i really needed...

I am much obliged and grateful for this shared nugget. Thank you!

I actually can't believe it.....

You must be my unmet double. I feel exactly the same way. I really really wanted to monitor oil pressure. I don't understand how or why it ever depreciated to a second class piece of information for an internal combustion engine.

 

[PPK]

You must be my unmet double. I feel exactly the same way. I really really wanted to monitor oil pressure. I don't understand how or why it ever depreciated to a second class piece of information for an internal combustion engine.

 

[Snakebitten]

I feel so much better knowing there are other PID addicts.

 

[Cobraman428]

I feel so much better knowing there are other PID addicts.

If you or a friend has a PID addiction please seek help immediately.
For help with PID addiction, call 1-800-PID-HELP.

 

[fordtruckman2003]

I've never saw need to have them going all the time but I do look occasionally.

Intake manifold absolute pressure minus barometric pressure does seem to match dash boost gauge.

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