Weird Ideas for EGR
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Senior User
Joined: Aug 2007
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Weird Ideas for EGR
Hey guys, it's been a while.
I was mulling over hte EGR valve and cooler issue today and had an interesting idea. Not sure if it will work, so that's why I'm here.
First off, my EGR is currently unplugged, my cooler is fine, CEL is on.
Say you'd like to disable the EGR cooler, you'd by a freeze plug for the uppie or get a block off plate, whatever.
What would happen if you'd tap or weld in a bung in the cooler itself to draw in CNG or compressed air? So in theory the EGR cooler will act an extension of the air/CNG tank. It seems to me that the EGR valve will still be functional, the computer will detect flow, I'd think that you just insured yourself a carbon and CEL free engine. The only problem I can see with it is how much pressure can the cooler withstand?
I know the idea is goofy but et me know what you think nonetheless.
I was mulling over hte EGR valve and cooler issue today and had an interesting idea. Not sure if it will work, so that's why I'm here.
First off, my EGR is currently unplugged, my cooler is fine, CEL is on.
Say you'd like to disable the EGR cooler, you'd by a freeze plug for the uppie or get a block off plate, whatever.
What would happen if you'd tap or weld in a bung in the cooler itself to draw in CNG or compressed air? So in theory the EGR cooler will act an extension of the air/CNG tank. It seems to me that the EGR valve will still be functional, the computer will detect flow, I'd think that you just insured yourself a carbon and CEL free engine. The only problem I can see with it is how much pressure can the cooler withstand?
I know the idea is goofy but et me know what you think nonetheless.
Senior User
Joined: Oct 2008
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You would just need a regualtor set at about 50psi (not a problem at all). There is not a true "flow" detection from what I read, it is a pressure Difference. Flow is infered. Any gas that is at a higher pressure than what is in the intake would work. Replacing the burned exhaust gas with a clean gas would not be detected. I do not however believe that this would give you the CNG benifit......................... unless you just plummed it to both the EGR inlet that you created and the intake. The higher pressure CNG will that the path of least resistance. Some would go through the egr valve when it opened and all the other times it would flow from the injection point.
I bet a tune is cheaper.
I bet a tune is cheaper.
Logistics Pro
Joined: Sep 2006
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From: Airdrie Alberta
Between the up pipe and egr cooler to block it off is what he was meaning.
Posting Guru
Joined: Apr 2008
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From: Albemarle, NC
Ok so say in theroy that this worked, it would only take care of 50% of the EGR cooler problems. The other 50% is the cooler leaking and letting coolant get into the intake and ultimatley the combustion chambers. While its a neat theroy, I dont think the work involved would justify it. Fully delete it, get a tune and be done with it forever.
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As I understand it, the reason for the cooler leakage is that the exhaust gas weakens the joints on it, thus allowing the coolant to enter the intake. The whole reason for this is not to gain any extra power or milage. It's just to ensure that the engine runs clean, without drawing too much attention to the fact that the cooler is missing or there are codes present.
Fleet Mechanic
Joined: Oct 2006
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From: North Florida
As I understand it, the reason for the cooler leakage is that the exhaust gas weakens the joints on it, thus allowing the coolant to enter the intake. The whole reason for this is not to gain any extra power or milage. It's just to ensure that the engine runs clean, without drawing too much attention to the fact that the cooler is missing or there are codes present.
