EGR Delete, sort of...
Thread Starter
|
Mountain Pass
Joined: Dec 2010
Posts: 111
Likes: 1
EGR Delete, sort of...
I re-thought doing a egr cooler delete because of Ca emissions testing, but got a Bulletproof egr cooler instead. My plan is to turn off the egr through a SCT tune so I can turn it back on for smog testing should I need to and eliminate the scoop in the right up tube. Also will have gauges to monitor oil cooler health. In theory, I should get very little gas into the egr cooler at all if the egr valve stays closed and still prevent overheating the coolant in the egr cooler, correct?
Thread Starter
|
Mountain Pass
Joined: Dec 2010
Posts: 111
Likes: 1
I hope the lack of responses indicates I've read everthing there is about 6.0s but I doubt it, so I'm bumping.
BTW I did learn the drawback to this is the possibility of the exhaust pressure under heavy load may push the EGR valve open. I think it was the 05s that have the 30# spring on them? So, if this does happen, it my be very infrequent and I should still be essentially EGR free.
I did get my up-tube out and deleted the scoop.
BTW I did learn the drawback to this is the possibility of the exhaust pressure under heavy load may push the EGR valve open. I think it was the 05s that have the 30# spring on them? So, if this does happen, it my be very infrequent and I should still be essentially EGR free.
I did get my up-tube out and deleted the scoop.
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
I'm posting mostly to subscribe.
Your question has been and will be debated, but I agree with you. If the valve stays closed, there will be virtually no exhaust gas flowing through the EGR cooler. It is a dead ended system as long as that valves stays closed, and thus no flow. There will be pressure in the cooler however.
If the valve is going to blow open, it's going to blow open. The EGR is commanded to be closed under hard acceleration anyway, and this does not seem to be a problem. But if you wanted to, you could have a second valve that you have welded closed, and just install an operational valve when you load the stock tune for the emission test.
Your question has been and will be debated, but I agree with you. If the valve stays closed, there will be virtually no exhaust gas flowing through the EGR cooler. It is a dead ended system as long as that valves stays closed, and thus no flow. There will be pressure in the cooler however.
If the valve is going to blow open, it's going to blow open. The EGR is commanded to be closed under hard acceleration anyway, and this does not seem to be a problem. But if you wanted to, you could have a second valve that you have welded closed, and just install an operational valve when you load the stock tune for the emission test.
Thread Starter
|
Mountain Pass
Joined: Dec 2010
Posts: 111
Likes: 1
That's a good idea, I thought about welding it shut before, but tossed the idea before deciding to get the tuner. As long as the valve is shut there will be zero flow in the cooler. There won't be anything to insulate it from the exhaust going past the end. I think, however, it will be much cooler than if exhaust were flowing through it, and won't even come close to flashing and gelling the coolant. The coolant will be constantly flowing and the gas will be static just sitting there at coolant temp.
