Disabling EGR
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Junior User
Joined: Jun 2008
Posts: 51
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Disabling EGR
Basically, I want to know the pros and cons, if I would have any problems with the computer and if so how to fool the computer into thinking that the egr is working fine.
I thought that with the small 2.3l engine in my truck, it doesn't really need something pouring exhaust into the cylinder and decreasing power of the already small power output.
(I already know that it may be illegal to do this and take full responsibility for the consequences. So those of you that want to give a lecture on how it hurts the environment and is against the law, please don't bother.)
I thought that with the small 2.3l engine in my truck, it doesn't really need something pouring exhaust into the cylinder and decreasing power of the already small power output.
(I already know that it may be illegal to do this and take full responsibility for the consequences. So those of you that want to give a lecture on how it hurts the environment and is against the law, please don't bother.)
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Junior User
Joined: Jun 2008
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I've heard that and I've heard that it helps fuel economy, but why is that?
When you add exhaust to the charge, it reduces the explosion, right? So with a less explosive charge wouldn't it lower power and economy? After all you'd need more fuel and air to make up for the exhaust gas being there.
When you add exhaust to the charge, it reduces the explosion, right? So with a less explosive charge wouldn't it lower power and economy? After all you'd need more fuel and air to make up for the exhaust gas being there.
Fleet Mechanic
Joined: Sep 2003
Posts: 1,979
Likes: 2
From: central ohio
on my '88 2.3 i just removed the steel tube and put big brass pipe plugs in where the tube hooked up to. had to wrap a hose clamp around the exhaust manifold & plug due to the difference in expantion when the manifold heated up (plug would pop out) that same truck i eliminated the e.g.r, gutted the cat, put fuel injectors from a 302 V8 in it and had no problems with it. the newer stuff with the OBD2 diagnostics probly would have problems. i left the oxygen sensor alone on my '88 if it ever ended up somewhere where there was testing for pollution, it wouldnt have passed, thats for sure. but it really wasnt any worse than any other pre-emmisions vehicle.
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Junior User
Joined: Jun 2008
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on my '88 2.3 i just removed the steel tube and put big brass pipe plugs in where the tube hooked up to. had to wrap a hose clamp around the exhaust manifold & plug due to the difference in expantion when the manifold heated up (plug would pop out) that same truck i eliminated the e.g.r, gutted the cat, put fuel injectors from a 302 V8 in it and had no problems with it. the newer stuff with the OBD2 diagnostics probly would have problems. i left the oxygen sensor alone on my '88 if it ever ended up somewhere where there was testing for pollution, it wouldnt have passed, thats for sure. but it really wasnt any worse than any other pre-emmisions vehicle.
Think there would be any problems with sensors if I were to remove the pipe like you did?
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Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
You may gain a little in power in certain circumstances, but you will likely encounter pinging. It may or may not be cured by increasing octane. Depending on your vehicle, which you have not described, you may get a SES or CEL light lit.
I have gotten bad gas mileage when I encountered pinging with my 2.3. You will be increasing the emission of NOx.
YMMV.
tom
I have gotten bad gas mileage when I encountered pinging with my 2.3. You will be increasing the emission of NOx.
YMMV.
tom
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I've heard that and I've heard that it helps fuel economy, but why is that?
When you add exhaust to the charge, it reduces the explosion, right? So with a less explosive charge wouldn't it lower power and economy? After all you'd need more fuel and air to make up for the exhaust gas being there.
When you add exhaust to the charge, it reduces the explosion, right? So with a less explosive charge wouldn't it lower power and economy? After all you'd need more fuel and air to make up for the exhaust gas being there.
If you're set on trying this, just make sure your mods are reversable so you can go back if it causes a problem.
An '07? Isn't it still under warranty? Best bet for reliability, driveability--leave it alone.
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
An 07 will throw a code, light the SES/CEL, and run sub-optimally. Yeah, go ahead and do this - disable the EGR, and ignore the engineers paid thousands of dollars to figure out how to get the most efficiency and economy. That sounds so bright to me... not.
Your vehicle, your money, feel free.
I vote for keeping the EGR functional. You will be so much happier, I think.
tom
Your vehicle, your money, feel free.
I vote for keeping the EGR functional. You will be so much happier, I think.
tom
Thread Starter
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Junior User
Joined: Jun 2008
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Look pal, I'm looking for answers to my questions, not a comedian. If you actually read what I asked..."Basically, I want to know the pros and cons, if I would have any problems with the computer and if so how to fool the computer into thinking that the egr is working fine." I was trying to find out if it would be a good idea to try it. After finding the info I found here, I don't think that I'll do it.
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
I will honor the attitude of your request and ignore anything else you post on this site. I said do it at your own risk, and commented about the probability that you would not like the results. If you are insulted by my attempt at levity, so be it. I have been on this board for at least 6 years, and have made 1600 plus posts without a reaction like yours. Mebbe you should buy some skin thickener or engage brain before engaging keyboard.
Your "Look pal" comment is unwarranted and insulting.
As noted, I will ignore anything else you type, so have at it. I just consider the source.
Your "Look pal" comment is unwarranted and insulting.
As noted, I will ignore anything else you type, so have at it. I just consider the source.