EGR removal pro/con

[turbogate]

It's your car though....you can do as you like.

Who me? I've been boosting hard without my EGR for quite a while now. I am not the one who started the thread, I am just asking a question. I'm just trying to make sense of your statement that EGR is so important while some versions does not have it. I do see though how the JDMs ecu might have different setting/maps though. But do we have concrete proof of the later?

 

[Rajunz]

The only way to get any benefit from removing the EGR is if you remove the EGR system AND the Cooler Plate (2) behind the head and plug the exhaust port with a pipe plug. This Cooler Plate routes the exhaust from the hot side around the back of the no. 6 cylinder to the EGR system. By removing the Cooler Plate it removes this extra exhaust heat from the back side of that cylinder. By just using those block off plates (1&3) you are probably hurting that cylinder more than anything because then the exhaust gases are just trapped around the back of no. 6 without flowing. Also when you do this the second block off plate (3) is not even needed.

Hope this helps,
-Lance

 

[Red Dragon]

And *good luck* getting to that EGR cooler plate with the engine in the car.....:3d_frown:

 

[Joel W.]

As for #2 cooler, it seems like it might be a lot like trying to blow air into a bottle, It does not work? :dunno:

 

[hottscennessey]

the EGR cooler can be removed and replaced with a block-off plate with the engine in the car. You need a grinded down 10mm socket w/ a 1/4 din ratchet. The valve covers need to be removed and expect to have a sore back for the next week at least. Just a heads up there are 8 bolts and its not a fun task.

 

[Yellow 13]

HOLY ZOMBIE THREADS BATMAN!

 

[hottscennessey]

LOL oops. I forgot I was linked here.. OBNOXIOUS BUMPPP!

 

[isnms]

Oh, it's not that old, couple of month. Plus there is a lot of good info here.
FYI, it has been resolved for me, I got a replacement, post #11.

 

[Nick M]

I'm just trying to make sense of your statement that EGR is so important while some versions does not have it.

That isn't what he said. He said it was important for the engines that do have it. If it is a part of the programing, leave it.

If you are going stand alone, that is different.

I will disagree with Toyota were it is implied about making up the performance with mapping. It will be an improvement, but nowhere near as good as not having it. But Toyota has to play by the rules the EPA sets, and they do comply very well.

 

[jazzsaxman1988]

And since you noted the lower combustion temps, how would that make more heat and BHG? It doesn't obviously.

Think of where the EGR is run. You know that little cover on the back of the head? It routes the exhaust gas around the rear of the head. The hot exhaust gases raise the temperature of the rear of the head. If you block it off on the manifold side of the head, then it won't change the fact that the exhaust gas is run back there. However, if you block it off at the rear then you lower temps around the rear of the #6 cylinder.

 

[Wendigo]

With the EGR VSV removed will I be getting A CEL (assuming I ever get the engine back in the damn car)?

 

[isnms]

You only remove the EGR VSV if you are removing the entire EGR system.
But to answer your question, only if it is a California vehicle... iirc.

 

[jetjock]

Yes, correct.

 

[rumptis]

I removed mine when I pulled my engine for a BHG and have had no codes or problems related to taking the EGR off.

 

[Adjuster]

One bolt, one plug and two taps are all you need. (And having the engine out on a stand is a good idea....) LOL

The bolt you screw into the back of the head effectively plugging up the port that leads out of the #6 exhaust runner.
The plug you screw into the hole in the upper intake plenum, plugging that port as well.

The block off plates do the same thing.
My method has the "cooler" plate removed. It's scrap alloy now.

 

[Nick M]

Think of where the EGR is run. You know that little cover on the back of the head? It routes the exhaust gas around the rear of the head. The hot exhaust gases raise the temperature of the rear of the head. If you block it off on the manifold side of the head, then it won't change the fact that the exhaust gas is run back there. However, if you block it off at the rear then you lower temps around the rear of the #6 cylinder.

Simply routing hot exhaust gas from the exhaust port in the head to the manifold does not increase heat in the head.