d66 dominator?

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May 30, 2011 | 03:44 PM

#16

tjbeggs

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From: Silver Lake Dunes, MI

Quote:

Originally Posted by Talyn

EBPV strategy is not determined by tuning. The PCM goes by IAT and EOT.

I'm sure you could modify it in the tuning, but the truck doesn't care if its there or not.

Quote:

Originally Posted by Talyn

From my understanding, you should leave it on and just keep it clean, unless your going for big power, then you just plug the tube and leave the sensor plugged in. It can cause de-fueling.

Your confusing me!! Which way is it!

I don't believe that EPS affects fueling at all on the 7.3. 6.0 with VGT turbo is a whole nother story

May 30, 2011 | 04:12 PM

#17

Talyn

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From: Ashland City, TN

I'm talking a bout the EBPV in the first quote. In the second quote, the Exhaust presure sensor, which is up by the Hpop...
What is to be confused about?

I'm not sure the correct term for the sensor. Glenn understood what I was talking about..
Though, I'm not sure why the other poster brought up programing and EBPV stuff.

May 30, 2011 | 04:18 PM

#18

tjbeggs

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From: Silver Lake Dunes, MI

Quote:

Originally Posted by Talyn

Gotcha. I thought you were talking about the sensor in both posts.

May 30, 2011 | 04:37 PM

#19

Talyn

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From: Ashland City, TN

Yeah, the exhaust sensor that has the tube off the header can cause de-fueling when your going for big numbers.

May 30, 2011 | 04:42 PM

#20

tjbeggs

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From: Silver Lake Dunes, MI

Quote:

Originally Posted by Talyn

Yeah, the exhaust sensor that has the tube off the header can cause de-fueling when your going for big numbers.

Who says??

May 30, 2011 | 04:54 PM

#21

pjwoolw

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From: San Ramon Ca.

This is what the book says anyhow. As I see it is supposed to send input to the PCM for EBPV control.

EXHAUST BACK-PRESSURE SENSOR
The exhaust back-pressure is controlled by the PCM to provide more heat to the coolant for cab heating when ambient air temperature is below 7°C (45°F) and engine oil temperature is below 75°C (167°F) during low load, low speed operating conditions.

May 30, 2011 | 05:23 PM

#22

hedhntr

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Air filter is brand new, i figured i would need a hpop eventually but i thought you got more fuel/smoke with a bigger hpop. i will try the eps tube cleaning, is it pretty straight forward? From what ive seen it looks like tw's tunes smoke more, and im not willing to send in for a reburn without talking to him first even though i know people just do it

May 30, 2011 | 05:23 PM

#23

Talyn

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From: Ashland City, TN

Quote:

Originally Posted by tjbeggs

Who says??

Tis what I've heard.

They also say the map sensor can, and some say it wont.

But whatever.

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May 30, 2011 | 05:42 PM

#24

427 fordman

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Joined: Feb 2009

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From: Plankinton, SD

I was told the sensor can just be unplugged and the tube removed, with a plug installed in the manifold, if the ebpv is deleted.. IIRC it was Jim who said this. Said it has no effect on our trucks.

May 30, 2011 | 05:53 PM

#25

tjbeggs

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From: Silver Lake Dunes, MI

Quote:

Originally Posted by Talyn

Tis what I've heard.

They also say the map sensor can, and some say it wont.

But whatever.

MAP can "defuel" but its cause it gets confused when it sees high boost. Some do, some don't. Mine does that is why I have a mini regulator in the MAP line so the MAP only sees 25 psi or so.

To the OP, a HPOP may help with smoke. If the HPOP can't keep pressures up the fuel doesn't atomize as well as it should and if it isn't atomized it won't burn as complete. So higher pressures, atomize the fuel better and will create a more complete burn which means less smoke.

Some data logging will be needed to know whether your HPOP is not able to keep up.

May 30, 2011 | 07:16 PM

#26

Talyn

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From: Ashland City, TN

Quote:

Originally Posted by 427 fordman

I was told the sensor can just be unplugged and the tube removed, with a plug installed in the manifold, if the ebpv is deleted.. IIRC it was Jim who said this. Said it has no effect on our trucks.

I'm not sure how EBPV came up talking about exhaust back pressure sensor, which isn't really involved much in EBPV strategy.
Mostly because it involves fuel strategy, not the EBPV.
Though, I'm sure that it could somehow.

If the tube is cracked or clogged, the truck wont fuel right.

If you unplug the sensor, the truck wont run right.
So you let it run atmo and just plug the tube.

Works under the same concept that tim is talking about with the Map sensor. Though, I've heard people say that OBS trucks dont have to worry about that and its a SD thing.

so, there is lots of.... iffy info out there.

May 30, 2011 | 07:32 PM

#27

pjwoolw

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Joined: Nov 2005

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From: San Ramon Ca.

Borrowed from Big K on another forum.

SIGNAL FUNCTIONS
The EBP (Exhaust Back Pressure) sensor is a variable capacitance sensor that when supplied with a 5 volt reference signal from the PCM produces a linear analog voltage signal that indicates exhaust back pressure.

The EBP sensor's primary function is to measure exhaust back pressure so that the PCM can control the exhaust back pressure regulator when needed.

FAULT DETECTION MANAGEMENT
An EBP signal that is detected out of range high or low by the PCM will cause the engine to ignore the EBP signal and disable exhaust back pressure operation.

The NGS tool will display a fixed PID value of 43.5 PSI (300 kPa) for EBP when exhaust back pressure is in default.

May 30, 2011 | 10:33 PM

#28

rideracelivemx7

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Joined: Mar 2009

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i found out my EBP sensor tube was plugged SOLID, it was nasty. guessing it was from the bad injector orings and the extended idol time in the winter but anywho. i cleaned it and noticed zero difference

May 30, 2011 | 11:22 PM

#29

oldbird1965

Fleet Owner

Joined: Aug 2004

Posts: 20,418

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From: AZ

I appreicate the answers. Mine is so rusty, if I attempted to clean it, well, you know.

May 31, 2011 | 06:50 AM

#30

Talyn

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Joined: Oct 2003

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From: Ashland City, TN

Interesting.

You guys know that when the EBPV is activated, it changes the fuel maping right?

Just a thought there.
The PCM doesn't know if its closed or not, just if its needing to be closed.

I get more fuel delivery now I cleaned mine. Went from clean to smoke out every intersection.

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