How would having a tune written excluding EGR valve commands result in realizing durability improvement from the EGR cooler? By not using it? Really? Is this your thought process?
I don't even think you asked a question. There is one person TUNING Ford products that would have a clue what else to change and by how much to keep CPs in check while excluding EGR commands. Even then, I doubt he has the data to work from that would tell anyone what the actual numbers were for CP based on fuel rates, timing, airflow and RPM so it would be an educated guess at best.
If it is such a great piece of engineering, why wasn't one put on the 7.3?
The fact that you don't know says a lot.
Removing the EGR cooler from the picture greatly reduces your chance of head gasket failure. Period.
Your thinking of having the EGR valve commands removed from the programming is flawed for one very simple reason. High boost numbers will force the EGR valve open. You won't even know it.
Really, how does that work? BTW, no where have I EVER recomended or advocated such an idea.
Coolant maintenance is hands-down the biggest underlying problem in the 6.0 liter. FORD, in its infinite wisdom chose a "one coolant for all" strategy in the day of the 6.0 liter. There is a long argument that goes on and on and on about this topic, and I would rather not have to rehash it all. My personal feeling is that if the coolant is good for a Ford Focus, it probably isn't such a good choice for my medium duty diesel engine.
Not properly maintaining the coolant is the reason that oil coolers plug, the EGR coolers fail and end in head gasket failure. (well the coolant and typical human nature of "if I ignore it, maybe it will go away" or "it is only doing that when I .....")
Yes, I agree for the most part but there is enough evidence to suggest G-5 is causal for cooler restriction for me to not use it in a 6.0L. I don't see that as a maintenance issue for the owner but a non-optimal factory choice, but I don't have Ford's engineering data on it either.
From first hand experience, deleting the EGR cooler does indeed drop EGT's. Somewhere in the neighborhood of 50°F on my truck, specifically.
Now, is that drop related to the removal of the restrictive scoop that is present in the up-pipe on the 6.0 (from 2004 up)? I can't really say for sure, because both my EGR cooler and the up-pipe with that scoop were removed at the same time. But I have certainly realized cooler EGT's.
Cooler EGTs have little to do with a precieved benefit from removing the EGR cooler or disabeling the system. Does anyone know how his EGTs could be lower with the EGR cooler deleted?
I also take exception to when you say that a stock, unmodified engine will outlast a modified engine. There are modifications that will GREATLY improve longevity.
Name ONE that WILL GREATLY improve longevity.
I have modified my engines oil cooling system. In fact, I no longer have the liquid to liquid oil cooler in my engine. My oil cooler is externally mounted (on the AC condenser) and thermostatically controlled. My oil cooler will last the lifetime of my truck. No stock unit will.
Let us know when this modification results in your engine living past 600K, because those are the current results for the OE cooler with good maintenance.
The manufacturers don't always get it right. This engines history will surely attest to that. Just take a look at the changes between 2003 and 2004.
Do you know WHY those changes were made? Do you realize that the '02-'03 trucks are actually more reliable?
Perhaps you should say that poorly designed, poorly executed or ill advised modifications can surely spell an early death of the engine. There are good and there are bad modifications. Pick wisely.
I couldn't have said it better! :thumbup