EGR

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CCANDELARI

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I was told that if I removed the EGR system completely from my 1998 XLT 5.4L that I would see an increase in horse power and fuel economy. Now... I understand it’s an emissions kind, government required, inspection needed whatever. That much I know, don’t need to know anything else. The law is the law right? What I’d like for someone or someone’s to do is to confirm or deny what I was told. If you know from personal experience. If you’ve seen it with your own eyes, please let me know.

Thank you,
Chad
 

poorboy1964

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No it won't if it would I'd do it, but any gains in hp would be so small that is't not worth it.
Now it you want your intake to stay clean and minimize carbon build up then yes it will help.
 

and0r

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It is..... technically.... a Felony.
That's a very serious type of punishment, even just being labeled as a felon is very serious. Be very careful here.

No it won't if it would I'd do it, but any gains in hp would be so small that is't not worth it.
Now it you want your intake to stay clean and minimize carbon build up then yes it will help.
The purpose is to alleviate the vehicle of cheaply made, failing EGR valves, and also tubing clutter.
 

and0r

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Can you rebuild an EGR valve? This would be the best option, but sadly you probably can't.
 

Adieu

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That's a very serious type of punishment, even just being labeled as a felon is very serious. Be very careful here.


The purpose is to alleviate the vehicle of cheaply made, failing EGR valves, and also tubing clutter.

It's mostly intended so that shops can't advertise services to defeat Federally Mandated Emmissions Crap, it seems... in most states exactly nobody is interested in chasing you down and hauling you to prison for it.

"for offroad use only", ever seen that bit of legalese on anything aftermarket?

That means that its technically not quite legal
 

uscgmac

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First off I don't think the EGR police will be busting down your door unless you live in California, then anything is possible. I would imagine removing it may cause problems such as throwing codes and fouling sensors. I'm sure someone will give you a better answer.

Sent from my SM-T350 using Tapatalk
 

and0r

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It's mostly intended so that shops can't advertise services to defeat Federally Mandated Emmissions Crap, it seems... in most states exactly nobody is interested in chasing you down and hauling you to prison for it.

"for offroad use only", ever seen that bit of legalese on anything aftermarket?

That means that its technically not quite legal

Yeah ok.
I should also say the exhaust from that giant 5.4 v8 really doesn't belong anywhere in the intake, unless you really really enjoy carbon buildup. Remove the EGR and your engine in pretty much guaranteed more durability. The EGR is totally not worth replacing on a vehicle which is several decades old.
 
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and0r

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The 2v 5.4 without the EGR is probably a 350,000 mile lasting engine
 
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CCANDELARI

CCANDELARI

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Well that was fun to read! I probably should have prefaced by explaining I live in Texas. I crack my windows in the morning and repeat “I love the smell of Napalm in the morning!” It makes me laugh... then I start my truck with its new set of true dual exhaust running through (2) instead of (4) “catalytic Magna glow converters” which look like big metal straws on the inside. It then passes through the Flowmaster 44’s to produce the sound of music to my ears. Now when I realized the EGR system was recirculating emission back into the very same engine cylinders that I'm trying to keep cool (with the help of the Volant cold air intake)I thought... that must have dawned on some genius while he was standing outside ******* in the wind. Anyone who signed off on installing a system that effects both the fuel economy and performance of a vehicle is frankly an idiot. If I were apart of that meeting I would have excused myself and asked the engineer politely of course to step into my office and explained he was f$&@ing fired.

In Texas it is punishable by a fine. It is not even classified as a misdemeanor. I don’t know where you live Adieu but here in the great state of Texas they don’t put cha in a cell next to John Wayne Gacy because your EGR system was some how “accidental” disconnected.
I had a feeling this conversation would somehow go that direction even though I specifically said “I understand it’s an emissions kind, government required, inspection needed whatever. That much I know, don’t need to know anything else.” What I was after was, will it or won’t it improve gas mileage and run better? I do believe it will.
O - and if you invest, in a let’s say SVT programmer for example... I’ve heard you can tell the computer to erase its little memory of the system ever being a part of the truck in the first place, like waking from a bad dream

Thank you all, I look forward to our next informative exchange of opinion.
 

Shabadoo

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Every car will react differently but theoretically, if you remove the EGR you'll probably see a small increase in HP at cruising loads when the valve is typically open the most. If my info. is correct, the EGR valve closes the higher the load because the richer A/F ratio reduces NOx. At WOT it's fully closed so you won't see any gains there. Also, you'll most likely see a decrease in fuel mileage. Additionally, and0r is correct in saying EGR causes considerable wear on an engine. Check out this graph from a 2011 paper in Applied Energy by Deepak Agarwal, Shrawan Kumar Singh, and Avinash Kumar Agarwal.

Effect of EGR on Wear.JPG

Granted, that's from a small two-cylinder diesel engine but it's only 96 hrs of running......you don't want to see the difference in carbon buildup. While I'm not advocating it, unless you live in a state which requires inspections that include emissions testing (VA), no one will bother you. Except maybe for that one mechanic that figures out what you did and reports it. Personally, it's bad for the environment and not worth it to remove.
 

and0r

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Yeah, I wouldn't worry about the EGR on the smaller 4.6 v8 though.
 
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and0r

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The 5.4 pumps out a lot of fire. It has a very, very large interfering stroke. Not a good idea to recycle this unfiltered exhaust into the intake system, especially at higher RPMs.
It certainly fouls the oil, at the very least.
 
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and0r

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The 2v 5.4 is definitely the most powerful engine in its class, by a significant margin.
This engine is terribly underrated, and is one of a kind, in my opinion.
 
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Russell Lewis

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Leave the EGR. Helps with vacuum and fuel economy. The whole idea of a EGR deleat came from diesel cars/trucks because exauset heat hurts turbo effency they go as far as adding a temp sensor to monitor it. You will not gain a single thing. Join ford truck enthusest you will get more info it’s guys running F250/350 with the 5.4 I learned a whole lot there. Give it a go
 

rjdelp7

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I had one off an old Saturn. It was loaded with carbon build up and not closing. It had CEL and a hesitation on acceleration. I clean it and car ran like new. It looked to be a simple open/close flap. It is a valve and not open 100% of time. Exhaust gases are not constantly going through engine. I wonder, if leaving it closed(disconnect), to exhaust would be an easy experiment for you to try. I personally would not mess with it. People think the 5.4l is some hot rod motor, its not. It is low rpm/compession work horse.
 
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CCANDELARI

CCANDELARI

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May I just say that I am sincerely impressed! I mean that and thank each of you for taking the time to explain. Nice touch with the chart by the way!
Okay... here’s what I’m going to do. I’m either going to clean out the EGR system and throttle body or replace with New parts. I didn’t like the idea of carbon build up. I don’t want to even chance reducing gas mileage. I don’t like the idea of my truck smelling inside. Those were the reasons and I couldn’t have come to that decision with out your input! Thank you ~ Chad
 

Russell Lewis

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May I just say that I am sincerely impressed! I mean that and thank each of you for taking the time to explain. Nice touch with the chart by the way!
Okay... here’s what I’m going to do. I’m either going to clean out the EGR system and throttle body or replace with New parts. I didn’t like the idea of carbon build up. I don’t want to even chance reducing gas mileage. I don’t like the idea of my truck smelling inside. Those were the reasons and I couldn’t have come to that decision with out your input! Thank you ~ Chad

I took of mine off cleaned them on a bench with a old toothbrush making sure to do butterfly both sides of the throttle body. Used break clean didn’t have any carborator cleaner. No smell at all all items air dried did outside myself.

Best of luck on your decision
 
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