H&S Guys what sustained PSI do you see and what tune version? - Ford Powerstroke Diesel Forum
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Old 10-18-2011, 05:43 PM
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H&S Guys what sustained PSI do you see and what tune version?

What are you seeing for sustained boost? I am seeing 23-24psi sustained and have 6.7.15.
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Old 10-18-2011, 05:52 PM
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I should be able to comment pretty soon
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Old 10-18-2011, 06:34 PM
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Quote:
Originally Posted by TXGold View Post
What are you seeing for sustained boost? I am seeing 23-24psi sustained and have 6.7.15.
Just a quick heads up, a lot of factors will come into play here. Not just tuning version. I see too many random values thrown out on forums, with not much background on what that value means, or how it can be interpreted to help someone reading the thread. So I'll try to steer it into a direction that may help a few people out.

1. Emissions equipment status
2. Power level
3. Barometric pressure
4. Engine RPM for this "sustained level"
5. Torque converter status
6. Coolant temperature
7. Ambient air temperature

Just a few things to keep in mind when looking at numbers! Thanks guys!

My 2011 F-250, DPF delete, 10,000 miles on the Odometer, 2500 ft elevation, Hot power level, Coolant 190, 80 degrees outside.
From a dead stop I will see max boost of 36psi if I watch it through the first 4 gears. The highest boost values will be seen at LOW rpm when the turbo vanes are closed a bit. Once the vanes open the boost will come down to 29-32 psi and hold there until the next shift.

Rolling into it, it depends on the TC status and engine RPM. TC locked, low RPM I will get 34-37 psi (load on the engine from the TC creates an ideal situation for building high boost numbers at low RPM). TC unlocked will yield max values 31-33psi. Once again, boost levels will drop in the higher RPMs as the variable geometry turbo opens and allow the engine to breathe (and keep the turbo from excessive overspeed).

Remember, manifold pressure is a restriction value and not necessarily a measure of horsepower or torque.
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Old 10-18-2011, 06:54 PM
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So when I get a dpf delete exhaust installed I should start seeing these higher boost numbers?

I understand you saying boost is a restrictive value BUT it is an inherent trait of power made.

When are the gear numbers going to be up on the display without hitting the up shift arrow? And when can we expect to see an increase in power on of the update tunes?
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Old 10-18-2011, 07:05 PM
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Thanks for the insight H&S. I appreciate your involvement with the forum
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Old 10-18-2011, 07:10 PM
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^^Yes, thanks for being involved in the community.
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Old 10-18-2011, 07:49 PM
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Thanks for the insight H&S. I appreciate your involvement with the forum
I 2nd that statement
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Old 10-19-2011, 04:23 AM
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Originally Posted by mysticblu999 View Post
I should be able to comment pretty soon
LOL, I suppose you made your decision as well!?
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Old 10-19-2011, 11:35 AM
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Quote:
Originally Posted by TXGold View Post
So when I get a dpf delete exhaust installed I should start seeing these higher boost numbers?

I understand you saying boost is a restrictive value BUT it is an inherent trait of power made.

When are the gear numbers going to be up on the display without hitting the up shift arrow? And when can we expect to see an increase in power on of the update tunes?
Yes, the Off-road tuning runs more fuel and more manifold pressure than the street legal tuning.

We are working on the new gear display functions that will default the display to on. No ETA on release yet, but it is on our high priority list right now.

HP on the DPF removed tuning is maxxed out with the stock hardware. Until the aftermarket catches up and provides the fueling and air upgrades, we cannot go any further. HP levels on the street legal tuning will stay where it is at, as we feel we have found the balance of a good HP increase and not causing problems to the emissions equipment.

Thanks!
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Old 10-19-2011, 11:36 AM
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Originally Posted by mysticblu999 View Post
Thanks for the insight H&S. I appreciate your involvement with the forum
Glad to be here, we are here to provide a product that you can be proud of on your new truck!
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