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Old 02-16-2012, 02:52 PM
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EGR Delete - different question

So, I just had an oil cooler replaced and the EGR deleted (kit from NADP but looks like BD Power) and the kit keeps the actual EGR valve in the intake manifold. Is there much point to fully removing it and putting the block off plate on? In my mind there is some restriction from leaving it installed but I was hoping for some feedback from others who have left in as well as those who have fully removed it. Thanks.
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Old 02-16-2012, 03:30 PM
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Quote:
Originally Posted by xtremexj View Post
So, I just had an oil cooler replaced and the EGR deleted (kit from NADP but looks like BD Power) and the kit keeps the actual EGR valve in the intake manifold. Is there much point to fully removing it and putting the block off plate on? In my mind there is some restriction from leaving it installed but I was hoping for some feedback from others who have left in as well as those who have fully removed it. Thanks.
Any restriction there may be is outweighed by the unmolested air flow to the turbo with the cooler deleted. I left mine in, and I still saw an improvement over just ditching the cooler. My truck actually has bottom end throttle response now!
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Old 02-16-2012, 03:45 PM
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pull the intake elbow off and look down in the hole, then tell me if you think the valve being in place is still restrictive




seriously though, where the valve is has no impact on airflow to the cylinders. it's not in the direct path of the intake charge.
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Old 02-16-2012, 03:48 PM
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Its not hurting anything by leaving it in where its at, just leave in plugged in electrically.

Depending on what strategy your PCM is running, when you disconnect the EGR valve electrically with the '03-'04 VXAP2 strategy it prevents the vanes from running thru the vane sweep cycle at idle. IIRC, the '05-07 strategies with a "9" in it and the EGR valve unplugged electrically causes the clutch fan from reaching full RPM.

God knows what else may be not working right with the EGR valve unplugged. IMO, your better off just leaving it in the manifold and keep it plugged in electrically.
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Old 02-16-2012, 03:58 PM
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I don't see a problem with leaving it in.

I do sometimes, some people that live in PA that I've worked on their trucks actually have me leave it in so they can pass a visual inspection.

Every one that I do leaves out of the shop with innovative custom tuning so anything strategy/electrically wise is taken care of.
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Old 02-17-2012, 06:10 AM
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Thanks for the responses guys. I'll leave in it for now and see how it runs and then maybe I'll experiment with removing it completely later.

I hadn't heard about the 03-04 issue with not cycling the vanes if the EGR was unplugged. I would imagine that doesn't apply if the EGR is turned off in my tunes though. My EGR valve should be in really good shape seeing as how it's been turned off for about 5 years now.
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Old 02-17-2012, 06:13 AM
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Originally Posted by sinner6.0L View Post
seriously though, where the valve is has no impact on airflow to the cylinders. it's not in the direct path of the intake charge.
This is EXACTLY the question I wanted answered. I was trying to find a good cut-away pic that showed how it sat in the intake so I would know for sure.
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Old 02-17-2012, 07:11 AM
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Quote:
Originally Posted by xtremexj View Post
Thanks for the responses guys. I'll leave in it for now and see how it runs and then maybe I'll experiment with removing it completely later.

I hadn't heard about the 03-04 issue with not cycling the vanes if the EGR was unplugged. I would imagine that doesn't apply if the EGR is turned off in my tunes though. My EGR valve should be in really good shape seeing as how it's been turned off for about 5 years now.
Myself and many others with the '03-'04 VXAPN strategy has experienced the no cycle vane issue when the valve was unplugged electrically.

Even when running custom tunes with the valve turned off.


You can find the EGR valve cut away view in the 6.0 bible up in the 6.0 tech section on this site.
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