I was searching ebay and found an egr blockoff set to eliminate the egr setup. Do you gain hp or torque or reliability or what?! I am also wondering if you pass emissions with this setup, thanks,....heres the link:

http://cgi.ebay.com/ebaymotors/ws/eB...ory=33607&rd=1

 

you want them for one of two reasons

1. if you buy yourself some headers and they dont have the egr hookups on them then you are going to need to block off the intake of your motor so you arent sucking in a bunch of crap

2. if you want to get rid of the egr that resiculates exhaust back into your engine to try and burn the unburt fuel that is in the exhaust.

sorry but i dont know wether or not youll pass emmisions

 

does anyone have pics of were the egr is located?

 

EGR valve is on the back of the intake on the drivers side. http://shbox.com/1/egr1.jpg I live in a non emission state (thanks God!!!) so I took off all emissions and you need the blockoff plates to seal up the holes after removal (I made my own). I would guess you would probably NOT pass emissions with the EGR delete.

 

Egr is not to burn unused fuel, it is there because exhaust gasses are believed to be cooler than the air around the intake manifold, therefore the gasses are recirculated back into the intake to cool the air. You may or may not pass emissions, you definately will not if your state does a visual under the hood inspection.

 

Removing the EGR does not enhance performance.

 

Better than the first answer, but still not quite correct. The exhaust gasses are essentially inert. They displace oxygen, reducing the amount of fuel burned and reducing combustion chamber temperatures. There is no way 1,000degF exhaust gasses can "cool the air", that's essentially at ambient conditions, and perhaps preheated to 200degF in the intake, at most.

EGR is not used at WOT, so there's no way it can hurt performance.

 

The reason I took mine out and blocked it off is because the crappy tube cracked in more then one place, and it always leaked from the connection to my SLP shorties.

 

so if you get long tubes without EGR, and plan to not pass emmisions, can you essentially take ALL EGR stuff out, block the hole and get a tune to delete it? or is there other stuff too.

 

Thats it. And when you add up the weight of the AIR system and EGR and cat(s) is a good chunk of weight you loose. Plus every liitle inch of extra space we can get under our hoods helps make the thing easier to work on.

 

Engineer summed it up very well. This should be a sticky as I see the questions asked so often.

There was another ebay company copiing them and selling gimmick hand cut cheap gaskets where gaskets were not even meant to be used.

I'll ***** out a company that I've dealt with for years.

www.sjmmanufacturing.com ask for steve, tell him john sent you. I believe they were the original manufacture of these plates as well as other parts until others copied what they produced.

J

 

Funny because I did. Guy said I had the lowest hydrocarbon (I think) emissions he'd ever seen on a performance car, said that was the result of a good EGR system. Strange then the only piece of emissions eqiupment I have is a new cat.

 

Thanks guys, I guess I will leave mine alone, I have shorty headers, and they hook to the egr right? I appreciate it---

 

Like said above if there is a visual inspection and they know what they are looking at...he won't pass...period!

 

Unburned HC's have little if anything to do with the EGR system. In fact, as HC's go down, NOx (what the EGR system is trying to control) goes up.

Its possible to pass NOx without the EGR system, but your readings will be higher on the NOx test, IF the drive cycle used on the dyno has conditions that will activate the EGR valve. It is used, for example, when you are lugging the engine at too low an RPM in the wrong gear. That increases combustion chamber temps, and increased combustion chamber temps cause the NOx to go up. A side benefit of EGR is that it reduces the tendancy to detonate (knock) under those conditions.

So they open the EGR valve to quench the combustion chamber temps..... and that reduces NOx. If you have a good tune with regard to A/F ratio and a good cat, it will hold NOx down, even if the EGR isn't working when its supposed to. Just increases the risk that a marginal car will fail.

Unburned HC's result primarily from a rich A/F mixture, with inadequate O2 to combine with the fuel and produce the preferred CO2 and water.