Hemi 6.4 EGR cooler.

[J-13GTP]

So Ive searched around and haven't been able come up with definitive answer so Im here to pick your brains.

Lets say some one has an off road Hemi 6.4 and the EGR cooler becomes a problem and removal or delete seems like a better option. I haven't seen much discussion in this area. I would like to talk about the possibility of said delete and what could be expected. Obviously coolant lines would have to be pluged and intake/exhaust manifolds would need plates. But what about the ecm and possiblity of it throwing codes. Has anyone ever done a full eger cooler delete on these engines?

 

[Brandon-w]

What years is this? I thought they stopped egr in like 2012 on these trucks lol.

 

[nlambert182]

Nope.... they still run a cooler.

 

[caulk04]

I don't believe I've ever heard of an egr cooler on gas motors. The more you know I guess

 

[Wild one]

The truck 6.4's use the egr to bring combustion temps down when the engine is under a high load,like pulling a decent grade with the truck towing 8000+ lbs. Keeps the piston tops and the top ring happier
You'd want to hook up with a good tuner and invest in a good A/Fr guage if you delete it

 

[Hemi395]

Wait, the 6.4 Hemi doesn't have VVT? I thought since VVT was added they can get EGR with that...

 

[Wild one]

Wait, the 6.4 Hemi doesn't have VVT? I thought since VVT was added they can get EGR with that...

Yes they also have VVT,lol.

 

[Hemi395]

Yes they also have VVT,lol.

Man the 6.4 must need some serious EGR....

 

[Wild one]

Man the 6.4 must need some serious EGR....

Just the truck 6.4's,the car/Jeep 6.4 doesn't have egr

 

[J-13GTP]

So just out of curiosity I unplugged the EGR valve. Engine ran fine but ecm did like, go figure.

 

[Wild one]

So just out of curiosity I unplugged the EGR valve. Engine ran fine but ecm did like, go figure.

The factory does run them a bit rich,but by deleting the egr,the engine will run leaner,so keep a real close eye on your spark plugs,as they're your best indicator if it's running to lean.Wouldn't hurt to invest in a good A/Fr gauge so you can keep an eye on how lean it is running.By pumping exhaust gas back into the cylinders,the engine and computor thinks it's running richer ,but there is some leaway with the factories fuel calibrations,so you might get away with-out it taking out a top ring land

 

[Wild one]

Dealer will have a block off plate for the egr port on the manifold,it's used on the 6.4 Jeeps as they use the same intake manifold as the HD truck 6.4's use,but with-out egr

 

[GeauxinUp]

Dealer will have a block off plate for the egr port on the manifold,it's used on the 6.4 Jeeps as they use the same intake manifold as the HD truck 6.4's use,but with-out egr

By chance would you know what size bolts I need for the block off plate?? I bought the mopar block off, and "ass-umed" it came with the bolts.

 

[Wild one]

By chance would you know what size bolts I need for the block off plate?? I bought the mopar block off, and "ass-umed" it came with the bolts.

Not off the the top of my head.
@DILLIGAF or @VB712 might know the size you need