Baro Reading for 2011 F150 Ecoboost

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schumbox
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Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Running i2 tuner on a 2011 F150 3.5l Ecoboost. Looking to understand the baro reading in DataViewer better.
See attached pic of key on/engine off. Below are my assumptions. Please correct my thinking.

'Boost ABS: Boost absolute pressure' ----Pressure sensor after turbos and before throttle blade.
'MAP SAE' ---- True Manifold Air pressure sensor on top of intake plenum
'Barometric Pressure' ---- Sensor internal to ECU???

In CMR software it appears only Boost ABS and MAP SAE are able to be modified slope and offset.
Know the ECU compares these sensors prior to start to get 'correct', but curious about 'Barometric pressure'??
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schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Thoughts??
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mikel
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Re: Baro Reading for 2011 F150 Ecoboost

Post by mikel »

Baro is often measured at key on using the map sensor.
I'd need to confirm that for this specific application but thats usually how it works as I understand it.
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schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

That's what makes this so weird.

Why would 'Barometric Pressure' reading still be sitting at 14.21 psi? (if 'MAP SAE' and 'Boost ABS' - direct sensor readings - at key on are 14.78 psi)
schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Were you able to confirm how the baro sensor works in this application and how/what CMR software reads?
schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Bueller? :)
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mikel
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Re: Baro Reading for 2011 F150 Ecoboost

Post by mikel »

Im told its an offset in the cal.
Can you post a log?
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

tech@diablosport.com
schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Here is the log. Interested to know what the parameters being displayed actually are. How would someone change the offset in the cal to match the 14.79-14.79 range?
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schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Thoughts on log?
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mikel
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Re: Baro Reading for 2011 F150 Ecoboost

Post by mikel »

I've asked them to dig through the PID data to try to make sense of this.
Nobody seems to think anything is wrong or broken, its just more so how it needs to be interpreted.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

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schumbox
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Re: Baro Reading for 2011 F150 Ecoboost

Post by schumbox »

Mike, Did you find out from engineering what each of the PIDs actually are?
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mikel
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Re: Baro Reading for 2011 F150 Ecoboost

Post by mikel »

No, its been tough to get a solid answer on this as we have some conflicting data.
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

tech@diablosport.com
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