yea that one will work fine.

You don't want to block off your EGR:

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

but dont alot of dsmers have it blocked off, anyone else have any problms i blocked it in my old car i felt it was better and the exhaust is cleaner

Just use a piece of aluminum, like a coke can or bottom of a coffee can.

coke can, i know what to use, just want to make sure its ok to block off, what r some cons??????

Defiant said:

You don't want to block off your EGR:

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

Click to expand...

Yeah I have to say that is a weak explanation of how it "helps". I would eliminate it and call it a day.

Michael

yeah i am going to. that web page didnt explain how its bad, i'll try it

Got mine blocked off too. I made my own plate. Just took a big sheet of 1/8" steel, traced my egr's flange, and cut it out, put some silcone on it to make sure it sealed, and badda bing. Cost me 25 cents, that was for the 2 new bolts.

mitsuclipsegsx said:

yeah i am going to. that web page didnt explain how its bad, i'll try it

Click to expand...

I'll try again:

Exhaust Gas Recirculation, or EGR system is an emissions reduction system.

What it does:

It reroutes burnt exhaust gases back to the intake air. The effect of the introduction of inert or incombustible gas increases gas mileage by displacing burnable oxygen/fuel withought effecting the air/fuel ratio. It decreases cylinder temperature (less boom, less heat), increases gas mileage (less oxygen, less fuel needed), and reduces the amount of NOx getting into the atmosphere.
The EGR valve is operated via vacuum passed to it from the EGR Solenoid. The computer sends a signal to the solenoid (during part throttle cruise conditions) which send vacuum to the valve, causing it to open at a varying amount.

Your call.

also commonly the culprit for that pesky idle surge people get. I don't have emission testing where I am, so I'm not too worried about emissions. I also don't see blowing some exhaust into my intake increasing my performance. it also allowed me to remove all my emissions and make for a much cleaner and uncluttered looking engine bay. But yes its your call, you may do as you please!

well i talked to a lot of dsmers w/ have it blocked and no side effects , i mean if i block it the hot gases wont go into intake making it colder yes i know its doesnt give like 10HP but i am doing it and if somen goes wrong i'll just take it out

Defiant said:

I'll try again:

Exhaust Gas Recirculation, or EGR system is an emissions reduction system.

What it does:

It reroutes burnt exhaust gases back to the intake air. The effect of the introduction of inert or incombustible gas increases gas mileage by displacing burnable oxygen/fuel withought effecting the air/fuel ratio. It decreases cylinder temperature (less boom, less heat), increases gas mileage (less oxygen, less fuel needed), and reduces the amount of NOx getting into the atmosphere.
The EGR valve is operated via vacuum passed to it from the EGR Solenoid. The computer sends a signal to the solenoid (during part throttle cruise conditions) which send vacuum to the valve, causing it to open at a varying amount.

Your call.

Click to expand...

In other words, it works at part throttle driving (cruising) to give you better gas mileage, lower EGT and lower emissions. All Good thing.

At WOT it's closed and you get Maximum HP either way. Your EGR doesn't operate at WOT in any way shape or form.

So blocking it off you get the following effects:

Part throttle you get worse gas mileage, higher EGT and higher emissions. All bad
Full throttle is no difference because it's closed anyway.

So by blocking your EGR your doing nothing but making your car worse, there is NO performance gain, only performance loss (engine performance not hp). If thats what you want to do, I have some really great turbo's to sell you guys. T-25's all around!!! On sale now, $1599.99

This is all going to be said based on the fact that this is a performance based forum. None of us are here to see if we can maximize our comfort or MPG. With that said,

Defiant said:

It reroutes burnt exhaust gases back to the intake air. The effect of the introduction of inert or incombustible gas increases gas mileage by displacing burnable oxygen/fuel withought effecting the air/fuel ratio.

Click to expand...

So, using numbers, lets say that you have 1000 parts available in the combustion chamber and no more. Under non-EGR use these would all be used to make power becasue they would all be combustable. Once they have been burned they are no longer combustable. If they are then reintroduced into the intake as uncombustible then they are just taking up space. You now have 200 parts not doing anything and 800 parts making power.

I am not interested in only using some of the power I make I want it all.

It decreases cylinder temperature (less boom, less heat), increases gas mileage (less oxygen, less fuel needed), and reduces the amount of NOx getting into the atmosphere.

Click to expand...

This is correct, but again, not what most of us want. So it will have less oxygen and less boom. Well to make power you need more oxygen so that you can make more boom. The more the boom the more power, unless that boom is preignition or detonation. The whole point of a turbo car is to add more oxygen so that the extra fuel will burn inthe appropriate manner.

The EGR valve is operated via vacuum passed to it from the EGR Solenoid. The computersends a signal to the solenoid (during part throttle cruise conditions) which send vacuum to the valve, causing it to open at a varying amount. Your call.

Click to expand...

Yes it does cycle on and off, btu I would rather not have and dirty unusable chargein my intake when I am trying to ring out the most performance, not MPG or effciency,from my car. If we all on MPGstretchers.com or effciencytuners.net , then yes I would say hook it up and have fun, but until then I am running with no EGR.

Michael


PS That whole thingin the article about addign displacment is so ghey.

"I have a 2.0 turbo"

"Oh yean, I have my EGR hooked up. I have a 2.00000000000000001 Turbo"

Yeah that is a great argument about displacment.

DSMJim said:

In other words, it works at part throttle driving (cruising) to give you better gas mileage, lower EGT and lower emissions. All Good thing.

At WOT it's closed and you get Maximum HP either way. Your EGR doesn't operate at WOT in any way shape or form.

So blocking it off you get the following effects:

Part throttle you get worse gas mileage, higher EGT and higher emissions. All bad
Full throttle is no difference because it's closed anyway.

So by blocking your EGR your doing nothing but making your car worse, there is NO performance gain, only performance loss (engine performance not hp). If thats what you want to do, I have some really great turbo's to sell you guys. T-25's all around!!! On sale now, $1599.99

Click to expand...

Non of this will be noticable on a dyno or in your gas bill. It is so minimal that I see no reason to have it on there dirting up your combustion chambers. Not to emntion all the other lines and hoses that could lead to possible vacuum leaks. If they are leaking, like probably 80% of the DSM onthis board that havent replaced those particular line, then it will be shutall the time not working anyway. I am willing to bet that there are a good number of people that have non functional EGR valves and have no idea. They probably never saw a rise in there normal EGT temp or there gas milage get any worse. Just food for thought.

Michael

boostedinaz said:

Non of this will be noticable on a dyno or in your gas bill. It is so minimal that I see no reason to have it on there dirting up your combustion chambers. Not to emntion all the other lines and hoses that could lead to possible vacuum leaks. If they are leaking, like probably 80% of the DSM onthis board that havent replaced those particular line, then it will be shutall the time not working anyway. I am willing to bet that there are a good number of people that have non functional EGR valves and have no idea. They probably never saw a rise in there normal EGT temp or there gas milage get any worse. Just food for thought.

Michael

Click to expand...

I agree with you 100%. However if your not having a vaccum related problem then there is still no point to blocking it off.

Personally I noticed a decline in my gas mileage but that is because I track it as I drive. I'm losing about 50km (35miles) per tank. Thats enough for me to notice. I lost my EGR with my Magnus manifold otherwise it would still be there. I have not really noticed an increase in EGT but I don't really put much faith in EGT anyways. Honestly I wouldn't buy the gauge again if I had the choice.

DSMJim said:

However if your not having a vaccum related problem then there is still no point to blocking it off.

Click to expand...

Again, since we are performance oriented, I will say that I just dont want anthing unnecessary in my combustion chambers. That gas that is redirected is pretty bad and can leave more deposits in the chamber than without EGR. These deposit can lead to hot spots and preignition. That preignition will lead to your knock sensor retarding timming.

IMO that is not worth getting 35 miles less per tank.

I have not really noticed an increase in EGT but I don't really put much faith in EGT anyways. Honestly I wouldn't buy the gauge again if I had the choice.

Click to expand...

Thas an another can of worms that we could discuss for days.

Michael

I am working on doing this mod myself. It looks like I can just make my own block off plate, which is what I will do. When I pull out the other vacuum stuff, and all the clutter what else should I pull out. Does the cannister and stuff under the battery need to be pulled out, or is it sufficient to pull just the vacuum lines and leave the cannister and whatnot in place.

also for people who have blocked it off...... did u feel part throttle like defiant is saying and loss of gas millege????

I'm about to do this as well. I remember reading an article with step by step instructions.
Now that I'm ready to do it, I can't remember where's that article nomore. Does anyone know? Already search vfaq and this site. Thanks.

I live in CA and when I blocked mine off my EGRT went from about <100 F to >500 F while cruising. This was all based on my datalogger and the CA EGRT sensor and not a regular EGT probe. I don't know if this will harm anything so I undid it and it went back down to <100 F. Again just my personal experience from trying to eliminate it because I thought it was contributing to my wierd idle (which it did not) so I just hooked it all back up and everything is back to normal.

mitsuclipsegsx said:

also for people who have blocked it off...... did u feel part throttle like defiant is saying and loss of gas millege????

Click to expand...

There is no EGR system on my car and my mileage commuting to work is at it's worst, equal to the E.P.A. average of 19mpg. (14 miles one way on secondary roads with lots of stops-no highway) This is on a built 2.3, so direct comparison to a stock engine may be difficult.