Should I block my egr? - Chevy and GMC Duramax Diesel Forum
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Old 01-11-2010, 09:15 AM   eBay Motors  #1 (permalink)
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Should I block my egr?

I was wondering if I should block my egr. I now have EFI in my truck and was thinking about doing it but I hear its such a pain in the a** lol. If anyone has an input it would be greatly appreciated.
Thanks,
Blake
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Old 01-11-2010, 09:16 AM   eBay Motors  #2 (permalink)
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Yes........
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Old 01-11-2010, 09:17 AM   eBay Motors  #3 (permalink)
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X2 on that. i would deff do that. lower EGT's
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Old 01-11-2010, 09:17 AM   eBay Motors  #4 (permalink)
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Did you do yours by yourself?
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Old 01-11-2010, 09:18 AM   eBay Motors  #5 (permalink)
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sounds like seth had fun doing his
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Old 01-11-2010, 09:21 AM   eBay Motors  #6 (permalink)
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It's definitetly healthier for your truck not to have sooty exhaust being released into your intake tract. You can turn it off with EFILive, but high manifold pressures will force the valve open. The blocker plate is a good way to know that no exhaust/soot is making its way back into your engine.
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Old 01-11-2010, 09:37 AM   eBay Motors  #7 (permalink)
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Quote:
Originally Posted by Duramax09 View Post
Did you do yours by yourself?
yes i did. i deleted it tho. i took the EGR cooler off and got a LB7 up pipe and i eleminated the EGR manifold with the valve in it
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Old 01-11-2010, 10:01 AM   eBay Motors  #8 (permalink)
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100% Yes!!!!
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Old 01-11-2010, 01:01 PM   eBay Motors  #9 (permalink)
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"My opinion"

The EGR basically has 2 functions, good and bad.
#1 When it opens it helps relieve head pressure, this is "good"
#2 Also when it opens it re-circulates exhaust thru the intake.
This is good for the environment but NOT so good for the engine.
In my opinion if you wanted to block the egr you should also consider opening up the exhaust from the exhaust port on the head to the tailpipe.
And install studs for the heads.
By just going with bigger exhaust from the downpipe-tailpipe, I don`t feel there is enough to relieve the head pressure when your just blocking the egr.
Sure you add big exhaust, but if you still have the stock exhaust manifolds,Y-pipe and stock downpipe there could be more head pressure built-up and cause possible bigger issues in the future.
The downpipe chokes down small which does not let enough exhaust pressure that has built up get out quick enough.
Several that add big power and have a lead foot, a blocked egr, find out eventually they need to install studs for the heads.
I feel if you just do the PCV re-route and forget worrying about whether to block the egr or not.
The PCV is very friendly to the environment but very nasty to the complete intake system.
By re-routing the PCV you will have a remarkable cleaner burning engine and exhaust, and leave the egr alone you won`t have the possible issue of to much head pressure.
I have a block-off plate that has been setting next to my computer monitor for 1 1/2 years. I feel unless I end up having actual egr issues that is where the block plate will stay.
I would not bother unless in the future you have a egr issue, then worry about it..
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Old 01-11-2010, 01:10 PM   eBay Motors  #10 (permalink)
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yes block your egr, keep your intake and engine free from the black nasty oil build up
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