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exaust back pressure

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Old Oct 8, 2014 | 09:56 PM
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exaust back pressure

First post wanted to thank everyone door the excellent forums here. Reading here helped me huge when my 07 f250 started acting funny with the egr. Went with the egr delete, new oil cooler, coolant filter, blue spring upgrade and a act livewire tuner. And has been purring like a kitten ever since. I have been watching the gauges on my tuner and am curious about the exhaust back pressure So where should it be and where should it never be? Just wondering as I have been watching my gauges and would like to start setting some warning levels on it.
 
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Old Oct 8, 2014 | 10:47 PM
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My 07 runs between 16.5 - 53.0 EBP psi.

At KOEO it show 14.3 psi (equivalent to 41.2 BARO).
 
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Old Oct 8, 2014 | 10:52 PM
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My gauge is in hg and runs around 120 when I'm running
 
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Old Oct 9, 2014 | 07:11 AM
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From: Frederick MD
Also I think it depends on the gauges. Like my cts reads 0 ebp at koeo and around 3 at idle.
 
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Old Oct 9, 2014 | 10:37 AM
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Originally Posted by Electricmetric
My gauge is in hg and runs around 120 when I'm running
You're in the ballpark for readings. My max 53 psi is equivalent to 138 inches of hg.

Pretty close.
 
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Old Oct 9, 2014 | 11:07 AM
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Originally Posted by Iaff113
Also I think it depends on the gauges. Like my cts reads 0 ebp at koeo and around 3 at idle.
That's not good. Should match within .5-1.5 psi of Baro and Map not go over 16 psi low or high idle

Josh
 
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Old Oct 9, 2014 | 11:19 AM
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From: Frederick MD
I was told it was because of the cts and the pid's? When I asked why mine was reading unlike anyone else's.
 
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Old Oct 9, 2014 | 11:41 AM
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Originally Posted by Iaff113
I was told it was because of the cts and the pid's? When I asked why mine was reading unlike anyone else's.
Interesting... Wonder why they would set it up that way

Josh
 
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Old Oct 9, 2014 | 11:45 AM
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From: Frederick MD
Originally Posted by Bullitt390
Interesting... Wonder why they would set it up that way Josh
I'm not sure. I don't even know if it is correct. That's just what I was told. A lot of the reading I have don't on the ebp issue all say what you said earlier and being .5 or so the same. Not sure why edge would be different
 
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Old Oct 9, 2014 | 11:53 AM
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Originally Posted by Bullitt390
That's not good. Should match within .5-1.5 psi of Baro and Map not go over 16 psi low or high idle

Josh
Josh,
I know on our Dashboss, you can pick "absolute pressure" , backing out the barometric pressure component.

I guess it's so one can match up with other components for comparison.

His reader my be much the same with zero not including BARO.
 
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Old Oct 9, 2014 | 01:53 PM
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From: Frederick MD
So is this right? The cts should read 0 at koeo and 2 or 3 at idle?
 
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Old Oct 9, 2014 | 02:13 PM
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Originally Posted by r2millers
Josh,
I know on our Dashboss, you can pick "absolute pressure" , backing out the barometric pressure component.

I guess it's so one can match up with other components for comparison.

His reader my be much the same with zero not including BARO.
I've never heard Mustang309 mention the discrepancy with EBP and Edge CTS.

But theoretically I suppose for example if Baro is 14.7 KOEO with EBP 0 then at idle the supposed reading is actually around 16-17 psi.

Josh
 
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Old Oct 9, 2014 | 02:15 PM
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Originally Posted by Iaff113
So is this right? The cts should read 0 at koeo and 2 or 3 at idle?
I know nothing about the Edge CTS, so take this for what it's worth.....

No, it does not seem right at all. If the gauge is not "supposed" to read accurately...what would be the point of having that gauge in the unit?

Who told you it wouln't read correctly, someone at Edge....or one of those know-it-alls on the internet forums?
 
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Old Oct 9, 2014 | 02:17 PM
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From: Frederick MD
It was on a previous thread here. I will do a test and see if it changes while messing with the pigtail.

It was said that the cts doesn't account for atmospheric pressure on ebp so it's not added in. I don't know what's right or wrong. I thought about just changing the sensor and see what that does
 
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Old Oct 9, 2014 | 02:20 PM
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Originally Posted by Bullitt390
I've never heard Mustang309 mention the discrepancy with EBP and Edge CTS.<br />
<br />
But theoretically I suppose for example if Baro is 14.7 KOEO with EBP 0 then at idle the supposed reading is actually around 16-17 psi.<br />
<br />
Josh
<br />
My Insight CTS does report EBP zero at KOEO and around 3 PSI at idle, I'm not sure why it reports it this way, the only thing I can figure is it the way its programmed. If it was really reading that far off I would expect it to throw a code. I just figured it was reading PSIG instead of PSIA.
 
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