Benefits of EGR delete and how to? - Forums at Modded Mustangs
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post #1 of 24 Old September 21st, 2010, 01:27 AM Thread Starter
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Benefits of EGR delete and how to?

Whats the benefits of a EGR delete and how is it done? Looked into the how to section but its not in there.


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post #2 of 24 Old September 21st, 2010, 01:28 AM
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post #3 of 24 Old September 21st, 2010, 02:14 AM
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cosmetics is the only real gain. EGR only works while cruising or under the lightest of throttle applications. Might notice a 1-2 mpg drop.

BUT, if you want to remove it, you need a block off plate for the plenum, a cap for the manifold port. Cap the vacuum lines and unbolt the egr valve and dpfe sensor.

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post #4 of 24 Old September 21st, 2010, 02:19 AM
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Looks so much better without the EGR


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post #5 of 24 Old September 21st, 2010, 02:21 AM
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But you also get a few hp freed up right?

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post #6 of 24 Old September 21st, 2010, 05:50 AM
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Cleans up the engine bay and also will help keep the intakes cleaner since its not running the unburnt gasses back into the upper plenum. Doubt you will feel any seat of the pants gains. Dont forget you will need to have the egr stuff turned off with a tune also to avoid the check engine light.


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post #7 of 24 Old September 21st, 2010, 07:29 AM
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Any before after pictures of the engine bay? And do you need to have it turned off by the tune solely to prevent the check engine light? I want to do it but won't be able to get up to the dyno anytime soon


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post #8 of 24 Old September 21st, 2010, 09:14 AM
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You will need it turned off by a tune or handheld to prevent the CEL I believe only b/c the sensors. You can have your tuner email you your existing tune with the egr turned off. I don't think there is a HP gain but you have to figure everything counts. No more exhaust gasses going back in the intake. I have a delete but I can't get to my bolt right now b/c of my long tubes and not knowing what size bolt it is n don't have the right size long wrench. sucks. haha

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post #9 of 24 Old September 23rd, 2010, 07:45 PM
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Anyone know what size the egr tube going to the manifold is? Looks like its gonna be a pain to get to.

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post #10 of 24 Old September 23rd, 2010, 07:50 PM
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Originally Posted by KevinJ99GT View Post
Anyone know what size the egr tube going to the manifold is? Looks like its gonna be a pain to get to.
22mm oil pan plug from autozone is what I have in the manifold, but its a bitch (understatement) to get the tube out of the manifold took me about 2hours before I got it off, you can also use a cap but I dont know the size !

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post #11 of 24 Old September 23rd, 2010, 07:55 PM
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I heard a 5/8" flare cap will work, but crawling under there and seeing how hard the tube is to get to, keeps making me put it off. Plus im not sure which vacuum lines to block off.

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post #12 of 24 Old September 23rd, 2010, 08:15 PM
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the threads on my header where the EGR tube connect to got cross threaded and I had to snip it off and weld it shut so rather than trying to remove it and redo it correctly I said screw it and just did the delete. Ford actually makes a kit that comes with a cap for the header and the plate + gasket and screws for the plenum. I orderd it from tousley ford.

Here's a photo of it, it comes satin I obviously painted it



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post #13 of 24 Old September 23rd, 2010, 09:04 PM
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there really is no need to get rid of the egr system. it does look nicer getting rid of it but it does serve some purpose. most people dont belive this but it cools down cylander head temps. the valve closes once you go wide open throttle. if you are sc it is worth getting rid of cause they do tend to leak boost. i capped the header bung by cutting the pipe so i could slide it off the nut, then i just replaced the pipe with a penny so it would close the hole. then you need a block plate like pictured above for the intake plenum
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post #14 of 24 Old September 23rd, 2010, 09:05 PM
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As far as the delete for the intake, it wouldn't be hard at all to make. But the Cap to put on the Header/exhaust manifold is where I would like to know what is the size and thread spacing is in order to get one. It looks to be standard pipe thread but I am not sure. Does any one know?

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post #15 of 24 Old September 23rd, 2010, 09:22 PM
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I assume you're not trying to pass emissions testing

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post #16 of 24 Old September 23rd, 2010, 10:16 PM
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if you shut it off with a tuner there shouldn't be any reason it will fail emission testing. Here in Ohio they just hook up the car to a scanner and test the system. If the computer doesn't throw anything back, then your good. I don't know how they do it in other states, but here they won't use the wand in the exhaust unless it's an OBD I setup. Also they won't check for converters here unless the car is loud.

For now they quit doing the e-check here in SW Ohio but I wouldn't doubt that they bring it back in a few years.

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post #17 of 24 Old September 23rd, 2010, 10:17 PM
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post #18 of 24 Old September 23rd, 2010, 10:26 PM
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Quote:
Originally Posted by Mustang46 View Post
As far as the delete for the intake, it wouldn't be hard at all to make. But the Cap to put on the Header/exhaust manifold is where I would like to know what is the size and thread spacing is in order to get one. It looks to be standard pipe thread but I am not sure. Does any one know?
Based off of some research and what ive heard from others komatsu thread is what they are. NPT seals by taper, these seal by the flare at the end of the fitting, similar to an AN line.

Last edited by ajm; September 23rd, 2010 at 10:29 PM. Reason: typo
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post #19 of 24 Old September 23rd, 2010, 10:51 PM
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Yes it depends what state you live in, My car is exempt, I put about 2-3k on it a year. However, my egr is shut off in the tune and in PA it passes emissions just fine since all they do is check for codes.


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post #20 of 24 Old September 23rd, 2010, 10:55 PM
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I assume you're not trying to pass emissions testing
That is what I was thinkin. You wont get passed on emmisions no matter then tune. Inless you know someone.

Leave it and spend your time on something else.

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