EGR

I've seen alot of discussion about by-passing and blocking the EGR .. what is the pro's - con's

[Evil Eye]

Pros-eliminate puking coolant out the degas bottle, reduce risk of blowing EGR cooler & oil cooler, eliminate coking of your intake/EGR, engine runs a bit cooler/better

Cons-sets a CEL, whichs requires a custom tuned SCT with "EGR delete", could cause a failed emissions test, 05-07 requires a sneaky pipe (or welding) to eliminate the EGR scoop, 03-04 require only a block off plate or freeze plug

I just had this done and it was probably my 3rd best mod behind my SCT and head studs...

[Granny]

I could not have said it any better myself. Very well done Shawn!

[bunch85e]

does anyone have a picture of the egr blocked off or where it is located

[DryHeatDude03]

Also where can I get a block off plate for it? I just cleaned my egr today and it was pretty coked up, I am intersted in getting rid of it also.

[Evil Eye]

You can get a block off plate from Elite diesel or you can just use a freeze plug. Oh and just a point of clarification, you are blocking off the EGR cooler, not the EGR itself. The 03's and 04's can just get blocked off, but the 05-07's had a scoop inside the up-pipe that needs to be cut out and re-welded or replace it with a sneaky pipe, also available from Elite.

You put the block off plate in the up-pipe, right at the "Y" where it enters the EGR cooler. This will prevent hot exhaust gasses from entering the EGR cooler (and therefore your intake), but most importantly, it will prevent blowing up the EGR cooler and oil cooler. I don't have a pic, but here's what the up-pipe looks like from Elite's website

[joediesel]

Originally Posted by Evil Eye

You can get a block off plate from Elite diesel or you can just use a freeze plug. Oh and just a point of clarification, you are blocking off the EGR cooler, not the EGR itself. The 03's and 04's can just get blocked off, but the 05-07's had a scoop inside the up-pipe that needs to be cut out and re-welded or replace it with a sneaky pipe, also available from Elite.

You put the block off plate in the up-pipe, right at the "Y" where it enters the EGR cooler. This will prevent hot exhaust gasses from entering the EGR cooler (and therefore your intake), but most importantly, it will prevent blowing up the EGR cooler and oil cooler. I don't have a pic, but here's what the up-pipe looks like from Elite's website

How does exhaust entering the EGR blow up the oil cooler?

[Evil Eye]

For clarification, it's the EGR cooler, not the EGR valve.

The exhaust boils the coolant which is used to cool both the oil cooler and exhaust gas in the EGR cooler. Most times, when the solder joints in the EGR cooler melt, it will pressurize the coolant line with exhaust gas. If this occurs for a good period of time, it will allow your oil cooler to overheat, blowing your oil cooler and leaking oil into your coolant or coolant into your oil.

[sea71]

Thanks for the info, and sorry if this is a hi jack, but will the problems you mentioned happen on a stock truck, or just on a truck that is tuned for performance? Thanks!

Yes Shane it happnes a good bit on stock trucks.