EGR Blocking, Pros & Cons of Do It. - Diesel Forum - TheDieselStop.com
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6.4L Upgrades and Aftermarket - Engine Upgrading or adding OEM or aftermarket equipment to your 2008-Up Super Duty truck with 6.4L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.

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Old 11-15-2010, 08:19 AM   #1 (permalink)
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EGR Blocking, Pros & Cons of Do It.

Hi to all,

Could someone tell me the pros and cons of installing EGR blocks? I have read some about the waste-gate function of the EGR and I am trying to understand the effect of blocking it with and without tuning. The blocking could be detrimental? When it is convenient and when it is not? Is it recomended when you are looking for motor reliability and durability?
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Last edited by Caribe_Pick_up; 11-15-2010 at 08:53 AM.
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Old 11-15-2010, 04:41 PM   #2 (permalink)
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I would only do it if you have the EGR turned off. Otherwise, you'll just be recircuating hot, uncooled exhaust which will probably decrease power and mileage even more.

I would definitely do it if you are planning to continually run a high power tuner that gives you the ability to turn the EGR off.

Pros: You won't hydrolock your engine in the even of a leak. It will just leak out at the block off plates.
Cons: It's illegal on the road and could cost you $10K if you are caught (not likely).
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Old 11-21-2010, 04:12 PM   #3 (permalink)
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if u block the gas side then you loose the system ability to relieve overboost. with variabke geomtetry staged turbo charging might not be much of a deal.

you bascially put blanking plates in at each end of the coolers. The valve continues to cycle but nothing happens. Water side doesnt care.

by itself probably doesnt buy you much by itself
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Old 11-21-2010, 06:10 PM   #4 (permalink)
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I would think that you would need to modify the wastegate so you can bleed off excessive boost.
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Old 12-04-2010, 12:53 AM   #5 (permalink)
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Eric at IDP talked me out of a delete kit as did Aaron at rudys. They summed it up, if I wasn't spending my time racing, sled pulling or pulling a lot of very heavy loads it would not be worth the expenience until the warranty is out. IF you have to take the vehicle back for some thing, the egr delete it NOT gonna help you get any warranty work done since it is not really reversable.
I'll do it in 2 more years when my warranty goes out.

Eric also sent me an email also stating that he does not have a delete on his at this time and highly recommended against block off plates.

Anyway thats what i learned-ed
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Old 03-30-2011, 08:49 AM   #6 (permalink)
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i wouldnt worry about the waste gate aspect of the egr... hell everyone took them off of 7.3s and 6.0s.. but my truck plugged the egr after 4000 miles with dpf delete and xtreme sct tune so i am going to put on the block off plates on.
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