EGR Blockoff question - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 07-29-2008, 06:53 AM Thread Starter
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EGR Blockoff question

HI There,
Had my EQR cooler blocked off when I had my head gaskets changed. I plan on installing an up pipe from elite, My question is, being that MY Cooler is blocked off and my EGR valve is still hooked up and in place, does the valve still open even though there is no exhaust flowing through it, and if it opens am I loosing boost in the manifold due to pressure pushing back into the cooler. I purchased a spool plug to replace the EGR valve, Is this overkill. Anyone out there have any comments on this matter, I would Appreciate any info. Thanks
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post #2 of 3 Old 07-29-2008, 02:55 PM
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the valve does open and close and there is exhaust running through it...just not through your cooler. I think you normally see more boost with the valve operating. I don't think the spool thingy majigger is overkill but you could also do it via custom tunes.

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post #3 of 3 Old 07-29-2008, 03:17 PM
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There can't be any exhaust running through it if he's blocked off. It blocks it from the up-pipe. There isn't any other feed of exhaust to the intake/egr valve. The valve can still open, if your EGR is leaking then you can get boost leakage back through the cooler. Otherwise it just builds pressure in the cooler and sits there.

If your tuned its likely closed at all times.

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