EGR Blockoff plate.

[Auladan]

What exactly is an EGR blockoff plate, and why would I need one?

I recently ripped out my emissions vacuum network and hosed it back up like the diagram below. However, I just noticed the EGR blockoff in that diagram, and I have no idea what it is.

Will I need that doowhat with the setup I've got now?

By the way, I did search and I only found threads that talk about prices, places to buy, and how to make your own. Not what they do and why I'd need one.

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[greeneclipse]

this should help...

http://www.myzero.com/engine/egr.html

 

[Defiant]

It's better to run EGR:

http://www.ukcar.com/features/tech/Engine/techno/exgr.htm

 

[crankbender]

That site is so much bs. You do not need egr and rarely want it. here are some of the bad things egr does to your car.

#1 increase intake air temps and in turn cause the exhaust to be hotter. Additionally egr is used when cruising which is when the engine typically tries to run a little lean (not so much with the dsm) to save on fuel. This means the exhaust does have oxygen on it and can make the engine run lean. This increase the thermal stress on the exhaust side of the head and can crack it. mitsu is well known for cracked heads in the exhaust port itself (non pressure area) because of thermal stresses.

#2 it durties your intake alot. The valves, the intake, the injectors, and everything else gets a nice black coating. This reduces the efficiency of the engine.

#3 supposidly you save on fuel........ thats crap the fuel is matched to the intake air stream before the intake. injecting air after the intake can reduce the flow but causes a loss in power. To counteract this the driver must open the tb more. The only fuel savings come from higher egts when cruising...but this causes higher thermal stresses and is bad.

#4 pumping losses....phooey. You will get pumping losses unless you have a complete vacume in the intake or a loss of valve sealing. the energy saved when the intake valves are open is lost when the exhaust valves are open. Yes it is easier to get the piston to suck when the intake is at a higher pressure but it is harder to clear the piston. There are no free lunches.

What egr does do is help emissions at cruising. It can if done right save on fuel because of the higher egts and lean condition but this has been shown to be bad for the engine. Block it off if you have a 1g you don't need it.

 

[TTalon]

where is the egt located i cant seem to find it in my engine bay...i have a 1g..
if anyone can post a pic as to where it is...that would be helpful...

 

[Jason_99ozGS]

Originally posted by TTalon
where is the egt located i cant seem to find it in my engine bay...i have a 1g..
if anyone can post a pic as to where it is...that would be helpful...

It's located on the side of the intakemanifold under the throttle body and near the battery. Take the battery out and that will give you room to get to it. There's two 12mm bolts holding it on along with two vacuum lines hooked up to it.

It's the thing at the bottom left... Crappy pic sorry about that, only one I could find

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[deeeep]

i have a 2g cal spec with 160.00 mils should i block it off i want to but people say it causes detonation please help

 

[kevingst]

when I did my 6bolt swap i just blocked it off, haven't had any problems with it. At least I didn't have to worry about which vac. line went where.

 

[Groomz]

Originally posted by deeeep
to block off or not to block off thats the question

Block it off. Get rid of the catalytic converter. Ditch the charcoal cannister. Cali people may not want to do all that though. It really doesn't matter too much about the EGR. You won't loose gas mileage or anything else. The EGR being useful doesn't make much sense if a phenolic spacer also works. One reduces the intake temps while the other raises them. They can't both be good? So get rid of the EGR.

 

[IHeartTurbo]

Originally posted by Auladan
What exactly is an EGR blockoff plate, and why would I need one?

I recently ripped out my emissions vacuum network and hosed it back up like the diagram below. However, I just noticed the EGR blockoff in that diagram, and I have no idea what it is.

Will I need that doowhat with the setup I've got now?

By the way, I did search and I only found threads that talk about prices, places to buy, and how to make your own. Not what they do and why I'd need one.

You must be logged in to view this image or video.

What's the website you found that pic at?

 

[Drifte]

i believe its from taboo..taboospeedshop.com