Anyone know if current programmers can turn off the EGR for better mileage.

Do programmers really give better mileage?

Thanks

Bob

 

EGR ??? does the 06 have one???

 

I believe the only way to turn off *all of the egr like functions is to get a new cam and elimiate the 3rd injection event. I'm interested in this as well...

This is what I read from ceberusiam at TDR

"It is the simplest form of EGR; include an oxygen depleted mixture with the incoming charge to cool the combustion event and limit NOX emissions. Engine makers have been doing this since 1968 when the first emisssions standards were put into effect.

Retard the injection timing and fire the main event after TDC, add a 3rd event that fires way late in the cycle, open the exhaust valve later in the cycle and hold it open more when the intake cycle starts, add a turbo that has boost to drive pressures at 1 to 1.2 - 2.0, and you have a functional in-cylinder EGR system that is reliable, simple, and meets the needs.

The visible by-products of this design are oil that gets dirty faster and visible soot when you hammer it and blow the CAT out. On the other hand, it gives us 325 HP 610 TQ 50 state qualified engine and a TQ peak that runs from 1600 to 2900 rpm's stock. IMO, acceptable trade off with a little creative engineering.

Truly, the 07 5.9 is the end of the diesel muscle truck era. "

 

There are EGR blocker plates and foolers for Duramaxes, but the 06 CTD doesn't have an EGR does it?
Mike
###

 

Dunno,

trying to figure it out. I cant imagine a modern diesel without EGR.
Just wondering if the mileage programmers work.

Bob

 

think you're confusing the EGR on the 6.7's with the 3rd injection event on the '04.5(?)+ 5.9's.

 

Well you found one with the 5.9 Cummins.

The EGR on a 5.9 from 04.5 to 07.5 is and in-cylinder solution that is done with valve timing, drive pressure, and injection events. You can redo the mechanical parts to get rid of it but $$$$. To date the only way to turn of the 3rd event is reprogram the ECU and there is only a handul of people in the States that can do that effectively and they can't/won't due to violating federal emissions guidlines.

NO programmers to do that.

As for mileage, just about all of them that modify the timing will give a mpg increase at the expense of emissions. The amount varies with what else they change in rail pressure and duration and how you use your right foot.