Anyone here do the EGR delete like the lightning guys?
Are the two EGR systems set up the same if we wanted to remove ours?

http://69.13.120.175/forums/showthread.php?t=200740

 

I did it, same way. Just need a tune or you will have a CEL

 

I looked at the link and wonder ; does this guy understand the EGR operation?
The EGR ..only ..operates in cruise and light throttle.
It never opens under a power condition.
It has no effect on a WOT power call.
Next, when EGR is called to operate, the PCM leans fuel and advances timeing.
This is a fuel saving function as well as a reduction in NX, but those people don't care about this.
Deleating EGR has no advantage just like a lot of other things., people jump on them and find out they don't provide any advantage besides a CEL lamp on all the time and doing it because someone else done it.
Would be far less hassle if a programmer turned the EGR function off in the program and left the hardware alone.

 

its not a big deal to remove it. It cleaned up my engine a lot, gives me much more room to work on everything, and for my engine, that extra hot exhaust gas isnt what I want heating up my intake charge, its hot enough as it is.

 

built, your also misunderstanding this function.
At cruise when the EGR is called, your not in any boost, so makes no difference.
As soon at the TPS goes about 7/8 tthrottle the EGR closes and has no effect.
The fast throttle position change is also sensesd by rate of change and adds extra fuel in any event.
Left as stock there would be no need for a tune on the basis of an EGR delete.
This nonsense has been going on since 1986 and been repeated on all the boards and asked a million times, yet once something gets started, it never dies as much as it is explained.
Now I don't care if anyone does it but it should be known it has no advantage for those who want to consider the subject and the reason/ tech explanation.
The EGR operational discription is found in the books as I have related.
I also run a K.B. on SD yet without an EGR delete. Tried it both ways with no advantage without it.
You would be way better off with water/alky injection and the gains it provides over no gains with EGR delete.

 

well im not putting my egr back on nor do I want hot air in there at part throttle, just no reason to have it. I didnt loose any mpg with it gone on my old engine. Thats all I have to say, but I agree, meth injection is next for me.

 

Bluegrass,
I by no means say I understand it totally. I haven't had time to investigate it yet, so thanks for all the information. But if like you said, it operates at anything less than 100% wide open throttle, seems the extra hot air would have a negative impact on power unless the throttle was totally pegged, which is rare for me. Any chance you could give me a quick description of the purpose of the system, you don't have to go into details. And if it helps or makes a difference, I have a vortech that will be going on in the next month or so. I just don't see where it would be beneficial due to the heat factor.

 

Built,
Just a suggestion. Love the signature but change your font color to light grey or silver, I never can make out your mods. You have enough, be proud of them and let us read em. Or put them at the bottom. I'd like to be able to see them all. Just my .02. Nice truck by the way, I may be right on your heels with the beefed up engine internals.

 

Wow, I second that, I thought all the E.G.R. vs. performance myths went out with the 80's

 

who here said anything about gaining power?

 

Then why remove it?

 

To name a few -

To clean up the engine compartment. - (That would be reason enough for me)

To stay away from a few expensive sensor failures .

That's a great write up on how to remove. Mines staying connected 4 now. My DD needs all the help it can get as far as MPG's..

 

On the old EEC systems, you could put a blocking plate between the EGR and the mounting plate to block any gases from going back in the intake without causeing a CEL lamp. That system could not tell the difference, but the fuel would still go lean and timing advanced and often cause a flat spot to throttle response until the throttle went 7/8 to higher..

On these systems, the design is such that you can't do the same without the PCM sensing it from the DPFE functions that would fail.
But you could still put a blocking plate in place and accept the CEL lamp on and covering up any other faults until a reader was used to check.
Once you get a CEL from an EGR malfunction, the PCM suspends the EGR anyways.

Better to leave it functional and not have the hassle.
Many of these alterations first came from the drag strip attempts to get the last amount of power. EGR delete, underdrive pullies etc. ,then people attempt to use them on the street where they cause more hassle than good.
Some will argue the points no matter.

 

built54 - yea, i can confirm that MIL unless you knock the EGR out with a tune - Bluegrass told me once that the pressure is tested right after start...-

That's why I had a MIL right away when I had to block mine while waiting for parts.

 

built - I can read your sig just fine on this end

But you might want to make a separate list below the photo , kind of like mine for those who can't..