I dont have actual knowledge, but logically, there is a valve in the intake, looks like a throttle valve on gas engines, that is removed when you change the elbow. I wondered why that was in place when I was removing mine. Now I know what it is.

 

Thanks, I may figure out a way to retain it.

 

i dont think you can because the tune that you load will disable it. If you dont change the intake elbow with your tune, you can actually unplug all the actuators and sensors that are attached to the egr system and you wont get a ECL. I suppose you could ask the people you are buying the tune from about that. They would be the ones who control the programming for those systems, which we use only when we go offroad

 

The purpose of that valve is to adjust differential pressure to allow the EGR to work correctly, thats the only purpose it has. If you disconnect it you will need a tune that turns the EGR system off. The spartan tuners have an option for this.
Turning the EGR off thru tuning does not stop coolant from entering the EGR coolers, nore does installing a EGR block of plate. The coolers can still fail and put coolant into the engine causing a hydrolock issue. If you don't have warranty i would honestly just remove the EGR coolers.

As far as the EGR delete causing a head gasket failure this is false. The issue is, the boost pressure does run slightly higher but running tuning like what spartan offers already compensates for this unless your running one of there aggressive tunes. The issue around the EGR delete causing head gasket issues has more to do with tuning and not to cause a war on who's running better you can PM me for my opinions on that. A lot of companies run aggressive timing with there tunes, this timing results in high cylinder temperatures and very high cylinder pressure which equals head gasket failure along with melted pistons etc......

While the 6.4 head gasket failure is not a fraction of what the 6.0 engines had this is just a result of the larger head bolts the 6.4 has along with for refined running. The 6.4 can pop a head gasket fairly easy with the wrong tuning and too much boost. The factory turbos can easily push the boost past 50 PSI, but at that point the turbos are far beyond there efficient capacity. A lot of people don't care about this fact they just like to ROLL COAL as many put it. A properly tuned truck will put the hurt on these guys along with the engine lasting much longer.

 

So as a brand new owner, if I run a the +40 hp tune (Spartan) EGR/DPF/Cat deleted I won't be boosting into infinity and blowing head gaskets?

 

Boost itself isn't going to do anything to your head gaskets... Its the fueling behind it and cylinder pressure spikes. On a 6.0 the vast majority of head gasket failures are simply because of a failed egr cooler. Even if the heads don't lift at the time of failure it will over stress the head bolts and make them fail much quicker.

The 6.4 its because of fueling... It is actually not that common for egr coolers to rupture on our trucks (unless you let coolant get low...) meaning that we don't see the same HG failures in stock form. The problem comes with tuning. Piston failures and head gasket failures go in hand in hand on these trucks. They build boost SO fast along with insane fuel flow into the cylinder means you get very high cylinder pressures with very little effort. But boost is a common blame for hg failure... Its actually mostly fuel that is to blame. And the fact that these trucks will run cold better than most gas motors. That boost (a tuned 6.4 will actually build up to 54psi of boost...) and fuel combined makes for a lot of power as we know. But you run a cold 6.4 hard and that unburnt fuel isn't much different than the coolant from a ruptured egr cooler............. Lots of fuel, boost, and a motor that will start and run at damn near any temp.

 

Got it, schooled again!

 

Sand pretty much nailed it as well, its just a matter of understanding the dynamics of a diesel motor... Air, fuel, and compression=cylinder pressure. Cylinder pressure is your energy.

 

First I want to say thanks to everyone on the forum who's been helping me out, and also to all those who have posted previously. I've read a lot and learned a ton already. I'm having a little difficulty trying to figure out which tuners are capable of deleting the 1-the DPF, 2-EGR (deactivating, so I can block it off), and 3-CAT. I'm not not much of a power junkie (although it definitely puts a big fat smile on my face), but I basically just want a strong and healthy truck. I can't imagine I'd ever have need for an additional 250hp so I'm not really interested in the hot/crazy tunes...just something to make it strong and healthy. There's talk about MiniMaxx, SCT, H&S, Edge...etc, etc, etc. I don't necessarily want "the best" tuner, just something respectable and affordable. Is there a comprehensive list somewhere for all the tuners that are capable of deleting DPF, CAT, and EGR? I think something with a monitor would be nice, and you guys might even say mandatory, but in all honesty I don't drive hard all that often. Thanks all! -Aaron

 

You could give Rudy's Diesel a shout. They have lots available and seem to be knowledgable.

 

Any of those will do the job. I went with SCT x4 because of the price. Regardless of which you choose, you will have to have "custom" tunes. I purchased mine separately from the tuner itself, but you can buy the tuner directly from one of the companies that offer tuning, and get a package deal. PM me if you need more details