whats the point of a egr block off plate??

[dsm92talonboost]

ok so ive searched around a little bit but all i find is how to install it and where its at. im just curious why do people do this?? any performance wise?

 

[ilco187]

Keeps the exhaust crud out the intake and keeps temps down. also to prevent boost leaks.

 

[kthackst]

Egr stands for exhaust gas recirculation and it is a federal standard for emissions. It takes some exhaust and reintroduces the exhaust back into the engine in a miserable attempt to burn gas that wasn't burnt the first time. Since there is exhaust in the intake it builds up a nice black film/crust and it does cause higher intake temps since it is exhaust when the egr is open.

 

[LiquidX]

If you don't have emissions, you can remove it and install a block off plate. No more potential boost leak and the biggest benefit is after removing it, you should remove the intake and thoroughly clean it out to remove any built up oil and carbon.

It is open at I believe idle and low load applications. So unless you have a leak that isn't getting fix remove it, other keep it on if you don't plan on cleaning the intake manifold completely afterwards. Just my opinion.

 

[agentorange313]

Egr stands for exhaust gas recirculation and it is a federal standard for emissions. It takes some exhaust and reintroduces the exhaust back into the engine in a miserable attempt to burn gas that wasn't burnt the first time. Since there is exhaust in the intake it builds up a nice black film/crust and it does cause higher intake temps since it is exhaust when the egr is open.

Yes to everything above.

Our cars run rich from the factory. Like it says above, EGR valve recirculated exhaust gauges back into the intake, to run it through the combustion process again. A properly operating EGR can theoretically increase the efficiency of gasoline engines.

Pros
-Increase engine efficiency
-Reduced heat rejection
-Reduced chemical dissociation
-he EGR valve also cools the exhaust valves and makes them last far longer (a very important benefit under light cruise conditions)
-Reduces NOx

Cons
-Rough idle and poor acceleration can be caused by a faulty EGR valve
-Unit must be replaced if faulty (or blocked off in our case)
-Location for boost/vacuum leak
-Additional vacuum lines and mess in the engine bay
-Theoretical loss of power in left on
-Easily clogged due carbon build up in the exhaust stream

It is open at I believe idle and low load applications. So unless you have a leak that isn't getting fix remove it, other keep it on if you don't plan on cleaning the intake manifold completely afterwards. Just my opinion.

No need to "believe", I will confirm, It is used under low load application, idle, cruising etc.

 

[dsm92talonboost]

Yes to everything above.

Our cars run rich from the factory. Like it says above, EGR valve recirculated exhaust gauges back into the intake, to run it through the combustion process again. A properly operating EGR can theoretically increase the efficiency of gasoline engines.

Pros
-Increase engine efficiency
-Reduced heat rejection
-Reduced chemical dissociation
-he EGR valve also cools the exhaust valves and makes them last far longer (a very important benefit under light cruise conditions)
-Reduces NOx

Cons
-Rough idle and poor acceleration can be caused by a faulty EGR valve
-Unit must be replaced if faulty (or blocked off in our case)
-Location for boost/vacuum leak
-Additional vacuum lines and mess in the engine bay
-Theoretical loss of power in left on
-Easily clogged due carbon build up in the exhaust stream



No need to "believe", I will confirm, It is used under low load application, idle, cruising etc.

so is this pro's and cons of a block plate or a egr valve? cause i put a egr block off plate and my car idles a bit higher than normal... it sounds like i have cams in it and not sure on spool time but... idk thanks for all the advise

 

[agentorange313]

its a pros and cons list of having the EGR valve.

You might have corrected a vacuum/boost leak and changed the idle on you car. What I would do is check for more boost leaks: http://www.dsmtuners.com/forums/art...-boost-leak-test-how-boostpro-net-tester.html

Then I would set the BISS Screw:2G BISS Adjustment

 

[gusu]

For those who think unused exhaust gas is being pushed through to be burned all the way you are dead wrong. It takes hot exhaust gases and puts them into the intake to keep temps at idle high enough to burn the fuel in the most efficent way.

 

[Guilty1s]

^ not true... fuel burns more "efficiently" at cooler temps anyways.

 

[jtmcinder]

You're both close (with Guilty being 99% of the way there). The recirculated gas can be thought of as being inert in that it has already been burnt. By using up some of the space, the temp is kept down in the cylinder. Burning cooler produces less NOx, which is something that causes acid rain.

In a nutshell, engines that are matched to their current use are the most efficient and produce the least nasty byproducts. Your engine can't shrink at idle, so they effectively shrink it by filling part of it up with inert gas.