EGR Deleted

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Jul 11, 2006 | 09:40 PM

#16

Customz

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From: Utopia

It'll bark in a high boost situation when you let off the throttle rapidly. You'll know it when you hear it

Jul 20, 2006 | 09:18 PM

#17

satcom40

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Joined: Oct 2004

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From: Ct.

I think i'll look into doing this, I'am getting this rapaid heat tranfer also. Thanks MAX

Jul 21, 2006 | 01:01 AM

#18

SoCalSuperDuty03

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From: SoCali!!

Hey Maxium...
I have had my y-pipe capped and welded up since the headgasket and stud install on my truck. I recently switched from an Excal 1 to an Excal 2 and different tunes. After the new tunes, I had the p0401 EGR low flow code pop up, so I would think with the new tunes the EGR circuit is not deleted like it was with the old tunes. Since I have no EGR flow, is it still possible for the turbo to force the EGR valve open through the intake?
Tim

Jul 21, 2006 | 03:48 AM

#19

Maxium4x4

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From: Ohio

Quote:

Originally Posted by SoCalSuperDuty03

I would check with who wrote your tunes about the code, your EGR should be turned off. Once you pull and weld it, you know it is done.

Jul 21, 2006 | 06:11 PM

#20

pstrang

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From: Idaho

I'm wondering about that speculation....

I've seen the different results. When my EGR is plugged IN, I see about 8 psi. more boost. So when it's functional, I boost more. But I prefer to disable and lose those boost lbs. to keep my engine cleaner.

If there is a way to disable EGR and not lose boost lbs., but I'm all for that.

Jul 21, 2006 | 06:25 PM

#21

kw5413

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Joined: Apr 2004

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From: Great State of Texas

And following that line of thought: With the disabled EGR lower boost effect...is that why we seem to have less overboost condtions with programmers? As opposed to overboost conditions that may exist with EGR Valve enabled?

Jul 22, 2006 | 10:35 PM

#22

SoCalSuperDuty03

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From: SoCali!!

Maxium,
The EGR is supposed to be deleted from the loop, but I couldn't understand why I would have the p0401 code pop up if it was out of the circuit. I did cut the inlet to the cooler and capped both ends very nicely, which always kicked the code with stock tuning. I also unplugged the EGR with an SCT tune loaded, which immediately produced the CEL and p0403/p0405 codes. I guess it would be physical impossibility to lose boost, as it in all actuality has nowhere to go.
Keith,
A great observation, quite possible. I know with one of my current SCT tunes, my truck makes between 24 and 29 lbs. of boost, depending on load, but runs just as hard as some of my prior tunes, either stacked with an Edge Juice or run solo, both with EGR delete, that made 33-34 lbs. of boost. I think tuning has come a long way in just the last couple years.
pstrang are you running a tuner?

Tim

Jul 23, 2006 | 12:19 AM

#23

pstrang

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From: Idaho

With stock programming, when EGR is unplugged, I boosted 7-10 psi less. With an economy SCT/ID tune, EGR is off and boost is similar to stock with EGR unplugged.

There is a connection between the EGR, EBP sensor, and VGT. Remove EGR from the loop and you lose boost lbs. Probably worth it though. But it would be nice to get those boost lbs. back.