EGR Programming (Interesting Post I Found On Internet)
Senior User
Joined: May 2005
Posts: 138
Likes: 0
From: Atlanta GA
From what i understand the computer will react as if it had an intact and working EGR if a second one is pluged into the port. Because in fact it does. So the computer should allow engine to function as designed, full boost and full performance. The only problem is the cost of the second EGR. No other way around it from what i understand.
Anyone else? The floor is yours...
Anyone else? The floor is yours...
Senior User
Joined: Jan 2004
Posts: 268
Likes: 0
From: Idaho
I recently installed a gauge set, with stock programming, my EGT's seem quite high! I did an empty WOT run for only 200 yards and my X-monitor recorded a pre-turbo max of 1418 F! Gees! I even have an AFE stage2 intake and MBRP 4" exhaust (kitty remains).
Outside temp was about 32F and I was at 4500 ft.
Anyone want to guess why? E_G_R cooler plugged?
I usually run with the E_G_R unplugged, but I had it connected while doing boost comparisions. BTW, I'm boosting 8-10 psi more with the E_G_R plugged in. When it's not connected, I see beyond 1200 F during a short WOT run. Still high for stock programming, empty, and intake/exhaust!
Thanks.
Outside temp was about 32F and I was at 4500 ft.
Anyone want to guess why? E_G_R cooler plugged?
I usually run with the E_G_R unplugged, but I had it connected while doing boost comparisions. BTW, I'm boosting 8-10 psi more with the E_G_R plugged in. When it's not connected, I see beyond 1200 F during a short WOT run. Still high for stock programming, empty, and intake/exhaust!
Thanks.
More Turbo
Joined: Sep 2005
Posts: 695
Likes: 2
From: arizona
should have little to do with the turbo
if you need the EGR so the computer will know what to do, etc then why do some programmers let you turn off the EGR ? and I have read some were on this web site some one was saying that one of the last ford flash's that the EGR was changed in the pcm to not operate as much ??
as far as I know (from my gas engine days) the EGR is for emissions.
to run some exhaust back through for a second burn.
if so, then it should have little to do with the turbo.(but also makes less exhaust being pushed out to spin the turbo so that might drop it back some)
that would also explain why some people say pulling it makes there trucks run better , no waste exhaust taking up good room were there would be air and fuel to be burnt ?
as far as I know (from my gas engine days) the EGR is for emissions.
to run some exhaust back through for a second burn.
if so, then it should have little to do with the turbo.(but also makes less exhaust being pushed out to spin the turbo so that might drop it back some)
that would also explain why some people say pulling it makes there trucks run better , no waste exhaust taking up good room were there would be air and fuel to be burnt ?
Last edited by chadjones99; Mar 13, 2006 at 09:49 PM.
Freshman User
Joined: Jan 2005
Posts: 26
Likes: 0
can get a EGR off the internet for 175, Id be willing to pay that if I can be sure I would be getting some benefit out of it I been unplug now for 13000 no problems & I well never plug back in again put if can get more out of her by running a dummy EGR I would, maybe I can get a tec to chime in
More Turbo
Joined: Sep 2005
Posts: 695
Likes: 2
From: arizona
big bucks
if you really want to do that dont spend that kinda $$$
check a junk yard, or check to see what tuners can tune it off. i mean 135$ is about 1/2 the price of a tuner.
lets us know, while i had the intake tube off today (was putting in a boost gauge) i seen all the oil that is in the intake. i think this coming weekend i am doing the PCV mod on this truck, it is dumping a fair amount of oil in the intake, that in it self could be why people have EGR problems (sticking) i think i will put a 1 liter catch bottle in then from there back to where the PVC should go. i will dump bottle when i do the oil changes
check a junk yard, or check to see what tuners can tune it off. i mean 135$ is about 1/2 the price of a tuner.
lets us know, while i had the intake tube off today (was putting in a boost gauge) i seen all the oil that is in the intake. i think this coming weekend i am doing the PCV mod on this truck, it is dumping a fair amount of oil in the intake, that in it self could be why people have EGR problems (sticking) i think i will put a 1 liter catch bottle in then from there back to where the PVC should go. i will dump bottle when i do the oil changes
Tuned
Joined: Oct 2000
Posts: 432
Likes: 6
I've had a spare used one plugged in for 10000? miles or so. I seriously thought it ran better when I first did it but now really can't tell a difference either way. Power, mileage, cold or hot seems the same. It runs good so I'm leaving the spare plugged in for now. I wish someone could settle this issue for good. Mines a May 03 build. I think the earlier models can do this but the later ones can't.
BE
BE
Senior User
Joined: Aug 2003
Posts: 248
Likes: 0
I was going to start a new thread for my question, but this seems like a good thread to discuss this so:
Does anyone know what "typical" pressures are seen in the exhaust path by the EBP sensor? My question stems from the thought that EGR can only be used (open) when exhaust pressure is greater than the manifold pressure. So that means that when manifold (boost) pressure equals or exceeds the pressure in the exhaust system, the EGR would need to be closed.
The pondering point is: When I am staring at the boost guage as it begins to climb up from zero, at what point would the EGR (if it is plugged in...) close?
Does anyone know what "typical" pressures are seen in the exhaust path by the EBP sensor? My question stems from the thought that EGR can only be used (open) when exhaust pressure is greater than the manifold pressure. So that means that when manifold (boost) pressure equals or exceeds the pressure in the exhaust system, the EGR would need to be closed.
The pondering point is: When I am staring at the boost guage as it begins to climb up from zero, at what point would the EGR (if it is plugged in...) close?
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Senior User
Joined: Aug 2004
Posts: 180
Likes: 0
Why cant you measure the resistance of the existing EGR and then use a resistor with the same value? Seems like it would be much cheaper. I personally dont see much if any difference in max boost with the EGR disconnected. There seem to be a few variables that dont seem to be consistent. It might run a tad cooler, I am not sure as I can approach 1450 with my edge on 5 almost instantly either way. I would think there are different maps depending on the speed of foot pressure and other inputs. Adaptive stuff might take alot of factors into account.
New User
Joined: Nov 2005
Posts: 3
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Originally Posted by Tdusseau
Yes I agree; the question is can that be done without another EGR? Is there some way to jump wires or some other way to tell the computer that it is working as designed? That would be nice, not sure if I want another EGR just hanging around in the engine bay. Just think that would look a little messed up.
If you want a good towing tune let me know. The name of a tuner with the best towing tune available to the best of my knowledge lives in FL. If information is wanted please contact me and his information can be provided.
Even with Number 1 diesel my mileage has improved 1.5mpg and more power available.
Senior User
Joined: Jan 2004
Posts: 268
Likes: 0
From: Idaho
WhiteFX4,
What are you boosting with your Street tune with the EGR out of the programming? Take an empty WOT run on flat ground.
With stock programming, I'm seeing a hugh difference in boost whether the egr is connected or not. I can get upwards 27 psi with the egr plugged in for such a run. Unplugged I can't get past 20 psi.
Thanks.
p.s. also, im getting abnormally hot with the EGR plugged in (see my post above)
What are you boosting with your Street tune with the EGR out of the programming? Take an empty WOT run on flat ground.
With stock programming, I'm seeing a hugh difference in boost whether the egr is connected or not. I can get upwards 27 psi with the egr plugged in for such a run. Unplugged I can't get past 20 psi.
Thanks.
p.s. also, im getting abnormally hot with the EGR plugged in (see my post above)
Senior User
Joined: May 2005
Posts: 138
Likes: 0
From: Atlanta GA
[QUOTE=pstrang]WhiteFX4,
With stock programming, I'm seeing a hugh difference in boost whether the egr is connected or not. I can get upwards 27 psi with the egr plugged in for such a run. Unplugged I can't get past 20 psi.
This is the same problem I am having. '05 non-cali model.
WhiteFX4: Are you still running your factory exhaust? And with the tune deleting the EGR are you still leaving it pluged in or is it unpluged? And last, who did you get your SCT from? Who did the tune for you to get the 400+hp?
With stock programming, I'm seeing a hugh difference in boost whether the egr is connected or not. I can get upwards 27 psi with the egr plugged in for such a run. Unplugged I can't get past 20 psi.
This is the same problem I am having. '05 non-cali model.
WhiteFX4: Are you still running your factory exhaust? And with the tune deleting the EGR are you still leaving it pluged in or is it unpluged? And last, who did you get your SCT from? Who did the tune for you to get the 400+hp?
Post Fiend
Joined: Oct 2002
Posts: 11,314
Likes: 4
MOST of the SCT tunes can turn off egr....
On my 03 I was able to disconnect without issue, but on my 05 it set a code and light...
didn't like the light... started to pull the bulb
but just reconnected and talked to my sct tuner
How bout that - mines ALSO in Florida
On my 03 I was able to disconnect without issue, but on my 05 it set a code and light...
didn't like the light... started to pull the bulb
but just reconnected and talked to my sct tuner How bout that - mines ALSO in Florida
Freshman User
Joined: Jan 2005
Posts: 37
Likes: 0
Well guys how do I contact this person or company and who should I talk too? I've had my valve Permenatly sealed for awhile now (not just unplugged) The intake stays a lot cleaner inside and there is a huge difference between unplugged and permenatly sealed. I only need the final touch now. meaning the right programming to go with it? If I can put this combo together I believe this truck could acctually be something great with long term dependabilty.
Senior User
Joined: May 2005
Posts: 138
Likes: 0
From: Atlanta GA
Originally Posted by Jerricho
I've had my valve Permenatly sealed for awhile now (not just unplugged) The intake stays a lot cleaner inside and there is a huge difference between unplugged and permenatly sealed.