Ok I have a silly question and would love the imput of someone smarter than me. I plan on doing an EGR delete and oil cooler in the near future, my delta is fine now between 4-9 degrees. I want to run an SCT with custom tunes from IDP specifically for the VGT braking effect. I know that they turn off the EGR function of the truck. The question that I have is will I be able to run the tune with the EGR system still in place? Will it damage anything? I'm concerned about the hot gases going into the cooler with no place to go. Do I have to do the delete before I can run the tunes or will it be ok having them on there turning off the egr function with an EGR system still in place. I have emailed IDP asking, but while I am waiting thier response I wanted to ask here. I hope that someone has first hand experience with this. Thank you very much for your time and sorry if this is a silly question.

 

It won't hurt a thing.

 

With EGR turned off in tune, valve stays shut. So exhaust gasses never enter intake except that little portion from up-pipe to EGR. Your intake doesn't see any pressures it wouldn't normally see

The part of the intake that blows out due to insufficient cooling is safely tucked away behind the EGR...which will be shut

 

I see so then the next question is if I have it turned off (EGR) the chances of a ruptured EGR cooler may go down? If they dont go down the chances of failed HG due to the coolant entering the combustion chamber should certanitally go down as the gas/coolant (ruptured) mix can never enter back into the cylinders?

 

Not only does the Cooler have less of a chance to rupture due to heat ( because it will not see much) if it does rupture, the EGR valve does not open so it will protect your motor from coolant entering the intake, and lifting the heads. The coolant will go back out the exhaust, through the Turbo and out the tail pipe.

A tune can be an effective electronic EGR delete.

 

Ok that is kind of what I was thinking so with a good temp spread and no signs of oil/egr cooler problems the tunes would be the best first step prior to the egr delete and would acomplish a similar effect and increase reliability? Thank you all for your help in this.

 

can the egr just be unplugged or will damage be done by doing so?

 

if you unplug the egr it will shut it off but you run the risk of the fan not operating properly. dont ask me how they are related but a test was done and it showed that the fan didnt work properly when the egr was unplugged. also really there is no need for a delete if this is what you are doing. your oil temp and ect temp spread seem to be fine so just leave it if i were you and spend your money on something else and if you do get a bullet proof cooler that way you dont ever have to worry about emmissions even if they dont exist right now they will one day with the way the its headed right now

 

So I will go with tunes that will act as an "electronic" delete first. Then maybe down the road do a BPD cooler instead of the delete. For now I would be corect in saying that running a custom tune disabling the EGR cycle will be safe with a functioning system in place? It will also act as a type of delete if the cooler were to rupture as the valve would not allow the vapor gas/coolant mix into the engine?

 

Yes. I've been doing that for 40k miles and I'm sure there are plenty of others who have been doing it longer.

I wouldn't count on that.

 

Thank you all just kind of confused, but once again all you great folks are showing me the light.