EGR Bypass?

futureMACH1racer · April 3rd, 2008, 10:36 AM

I don't know if this is wise on a gasoline engine, but on my diesel vehicles I have always bypassed and removed the EGR. Can I do this on my car, will it have any negative effects?

Mach Boy · April 3rd, 2008, 12:20 PM

You can put an EGR eliminator on it. They run for about 20 bucks. It won't hurt a thing.

futureMACH1racer · April 3rd, 2008, 12:34 PM

Who makes this and where do I find it, with my truck it was pretty involved.

weems · April 3rd, 2008, 01:13 PM

Whats the point of doing this?

futureMACH1racer · April 3rd, 2008, 01:51 PM

All of the Emissions BS chokes the engine.

03_StangGuy · April 3rd, 2008, 02:01 PM

EGR recirculates exhaust gas into the intake, its basically to help the engine warm up faster with the warm exhaust gas. Im cant remember the other reasons. Without it your car gets cleaner ass and it reduces deposits in ur engine.

Dont you need the EGR to pass emissions if you car come with one stock?

cmr98cobra · April 3rd, 2008, 02:59 PM

Your EGR system recirculates exhaust gases back into the intake to lower combustion temp. so you do not produce NOx (nitrogen oxides... very bad stuff).

If you remove it your. Yes, it would help your engine to not produce carbon deposits. Thats one of the positives. The negitives would be higher emissions, less mpg, higher cobustion temps.

Just one more thing their is no performance gain on modern vehicles by removing you egr valve.

futureMACH1racer · April 3rd, 2008, 03:58 PM

Not on gasoline powered vehicles, but on diesels it's a must if your want to make decent power.

ReverendDexter · April 3rd, 2008, 10:59 PM

Yeah, absolutely NO reason to remove EGR on a modern vehicle. When the engine is under load or at anything above about 1/3rd throttle, it automatically blocks off anyway. If anything, it will make your car run worse, and cost you some fuel economy while cruising.

Not all smog stuff is bad, some of it actually makes the car run more efficiently... umm, actually, the EGR is the only smog peice that I can think of that IS helpful.

01fordcobra · April 4th, 2008, 07:48 PM

They make a EGR delete that you can find on ebay, its the same as my 01 cobra. You can also get one from Modular EFI Parts

BizCutt · April 5th, 2008, 09:34 AM

all you need is a 1/8" piece of steel shaped like the egr adaptor plate bolted on to cover the hole in the intake....if you need the rgr for emissions just put a plug in the tube from your manifold until you need it..if not delete that as well...its simple to do...

Doc8224 · April 5th, 2008, 09:49 AM

You can make an egr restrictor gasket that will allow less in. I think on a N/A car thats the best and the most I would do. If you are gonna delete it, you will have to turn it off with the tuner as well
For boosted cars you definatly delete it.

cobraetti · April 5th, 2008, 09:18 PM

Originally Posted by Doc8224

You can make an egr restrictor gasket that will allow less in. I think on a N/A car thats the best and the most I would do. If you are gonna delete it, you will have to turn it off with the tuner as well
For boosted cars you definatly delete it.

I used one of these and got lower gas mileage

Doc8224 · April 5th, 2008, 10:54 PM

Originally Posted by cobraetti

I used one of these and got lower gas mileage

Yep thats what happens when you get rid of the egr. More power at wot but worse gas mileage in general.

ReverendDexter · April 6th, 2008, 10:05 PM

Originally Posted by Doc8224

More power at wot but worse gas mileage in general.

Does someone have dyno proof of this? My understanding of EGRs is that they inherently close off when the engine is under load, so there should be no benefit at WOT with a properly working EGR versus a blocked off/disabled EGR.

Also, if you're gonna boost, shouldn't there be a one-way valve that gets installed? Else how are supercharger kits 50-state legal?

Doc8224 · April 6th, 2008, 11:11 PM

Originally Posted by ReverendDexter

Does someone have dyno proof of this? My understanding of EGRs is that they inherently close off when the engine is under load, so there should be no benefit at WOT with a properly working EGR versus a blocked off/disabled EGR.

Also, if you're gonna boost, shouldn't there be a one-way valve that gets installed? Else how are supercharger kits 50-state legal?

As far a passing 50 state legal, there is a lot of grey area surronding what you can and can't do. I have only seen people block em off, and thats what I did when I put mine on my truck. No one way valve or nothing. Just pluged it and turned it off with the tune.

ReverendDexter · April 6th, 2008, 11:33 PM

Originally Posted by Doc8224

As far a passing 50 state legal, there is a lot of grey area surronding what you can and can't do.

Heh, not in California there isn't. It's either stock, CARB approved, or illegal.

Doc8224 · April 6th, 2008, 11:36 PM

Originally Posted by ReverendDexter

Heh, not in California there isn't. It's either stock, CARB approved, or illegal.

It has to pass there to 50 state legal so you tell me. if it wasn't then it wouldn't pass. They may get around it because they don't tell you to do it.

Trick Tuners · April 7th, 2008, 02:21 PM

EGR is generally good. The only reason to remove it is to clean up the engine bay. EGR will get you better gas mileage (slightly) and reduced combustion temps. It is not used at idle or WOT, only part throttle driving. You may need to back out the timing in the egr areas of the tune because egr requires higher timing due to the lower oxygen content. There is 0 power gains from egr removal.

April 3rd, 2008, 10:36 AM	#1
futureMACH1racer Honeybadger is Crazy 2008 F-250 Super Duty Join Date: Sep 2007 Location: United States of America Posts: 10,901 iTrader: 0 reviews	EGR Bypass? I don't know if this is wise on a gasoline engine, but on my diesel vehicles I have always bypassed and removed the EGR. Can I do this on my car, will it have any negative effects? __________________ RIP Travis Bilings 5/6/1982-7/5/2011 Be polite. Be professional. But have a plan to kill everyone you meet.

April 3rd, 2008, 12:20 PM	#2
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,820 Blog Entries: 1 iTrader: 1 reviews	You can put an EGR eliminator on it. They run for about 20 bucks. It won't hurt a thing. __________________ 360HP / 345TQ N/A

April 3rd, 2008, 12:34 PM	#3
futureMACH1racer Honeybadger is Crazy 2008 F-250 Super Duty Join Date: Sep 2007 Location: United States of America Posts: 10,901 iTrader: 0 reviews	Who makes this and where do I find it, with my truck it was pretty involved. __________________ RIP Travis Bilings 5/6/1982-7/5/2011 Be polite. Be professional. But have a plan to kill everyone you meet.

April 3rd, 2008, 01:51 PM	#5
futureMACH1racer Honeybadger is Crazy 2008 F-250 Super Duty Join Date: Sep 2007 Location: United States of America Posts: 10,901 iTrader: 0 reviews	All of the Emissions BS chokes the engine. __________________ RIP Travis Bilings 5/6/1982-7/5/2011 Be polite. Be professional. But have a plan to kill everyone you meet.

April 3rd, 2008, 03:58 PM	#8
futureMACH1racer Honeybadger is Crazy 2008 F-250 Super Duty Join Date: Sep 2007 Location: United States of America Posts: 10,901 iTrader: 0 reviews	Not on gasoline powered vehicles, but on diesels it's a must if your want to make decent power. __________________ RIP Travis Bilings 5/6/1982-7/5/2011 Be polite. Be professional. But have a plan to kill everyone you meet.

April 3rd, 2008, 01:13 PM	#4
weems Tech Exchange Head Honcho 2003 SVT Cobra 11.70 @ 121 Join Date: Aug 2006 Location: Forsyth/Statesboro, GA Posts: 9,050 iTrader: 3 reviews	Whats the point of doing this?

April 3rd, 2008, 02:01 PM	#6
03_StangGuy I Post Entirely Way Too Much Blown 03 GT Join Date: Jun 2007 Location: Long Island NY Posts: 6,238 iTrader: 0 reviews	EGR recirculates exhaust gas into the intake, its basically to help the engine warm up faster with the warm exhaust gas. Im cant remember the other reasons. Without it your car gets cleaner ass and it reduces deposits in ur engine. Dont you need the EGR to pass emissions if you car come with one stock?

April 3rd, 2008, 02:59 PM	#7
cmr98cobra Newbie Join Date: Jan 2008 Posts: 15 iTrader: 0 reviews	Your EGR system recirculates exhaust gases back into the intake to lower combustion temp. so you do not produce NOx (nitrogen oxides... very bad stuff). If you remove it your. Yes, it would help your engine to not produce carbon deposits. Thats one of the positives. The negitives would be higher emissions, less mpg, higher cobustion temps. Just one more thing their is no performance gain on modern vehicles by removing you egr valve.

April 3rd, 2008, 10:59 PM	#9
ReverendDexter Priest of the Car Gods Clapped-out '90 GT 'vert ~5.5 seconds off TTOD :( Join Date: Jan 2007 Location: Rohnert Park, CA Posts: 13,233 iTrader: 0 reviews	Yeah, absolutely NO reason to remove EGR on a modern vehicle. When the engine is under load or at anything above about 1/3rd throttle, it automatically blocks off anyway. If anything, it will make your car run worse, and cost you some fuel economy while cruising. Not all smog stuff is bad, some of it actually makes the car run more efficiently... umm, actually, the EGR is the only smog peice that I can think of that IS helpful. __________________ O o /¯/______________________ \|BLAAAAAAAAAAAAAAAAAAAAAAAAARGH!!! \_\ Buy my Bronco, special deal for MM folks

April 4th, 2008, 07:48 PM	#10
01fordcobra Newbie Join Date: Mar 2008 Posts: 8 iTrader: 0 reviews	They make a EGR delete that you can find on ebay, its the same as my 01 cobra. You can also get one from Modular EFI Parts

April 5th, 2008, 09:34 AM	#11
BizCutt Regular 97TT Gobra dyno queen Join Date: Apr 2008 Location: MD shore Posts: 312 iTrader: 0 reviews	all you need is a 1/8" piece of steel shaped like the egr adaptor plate bolted on to cover the hole in the intake....if you need the rgr for emissions just put a plug in the tube from your manifold until you need it..if not delete that as well...its simple to do... __________________ 97TT Gobra For Sale 697rwhp 662rwtq no one to play with but the dyno

April 5th, 2008, 09:49 AM	#12
Doc8224 N/A 4v Guru 2003 Mach 1 Join Date: Oct 2007 Location: Afghanistan Posts: 3,463 Blog Entries: 2 iTrader: 1 reviews	You can make an egr restrictor gasket that will allow less in. I think on a N/A car thats the best and the most I would do. If you are gonna delete it, you will have to turn it off with the tuner as well For boosted cars you definatly delete it. __________________ Military Crew U.S. Army Aviation Apache's Lead The Way

April 7th, 2008, 02:21 PM	#19
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,471 iTrader: 3 reviews	EGR is generally good. The only reason to remove it is to clean up the engine bay. EGR will get you better gas mileage (slightly) and reduced combustion temps. It is not used at idle or WOT, only part throttle driving. You may need to back out the timing in the egr areas of the tune because egr requires higher timing due to the lower oxygen content. There is 0 power gains from egr removal. __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

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