Hey mud.. does "disconnecting" the EGR mean simpling pluging the hoses? You are talking about the EGR, not the EGR modulator, right? Two hoses.

 

Most vehicles produced from 02-03 up don't have EGR anymore. EGR is an expensive system that throws ridiculous codes when not working right and rarely causes problems in cars (except 3vze powered cars which have sensors that sense if sensors are working right :rolleyes: ).

I yanked/blocked off the EGR in my 01 sentra. Made all the difference in the world. Decreased intake temps because I didn't have that superhot piece of metal flowing superhot exhaust gases right into the intake manifold. You wouldn't BELIEVE the carbon soot that covered the inside of that intake manifold after I blocked off the EGR. It was incredible. Almost took a wire brush to scrape it all out. Imagine all that carbon soot going BACK into your intake diluting the fresh oxygen for the combustion process?

Some claim it HELPS with power but I have yet to see dynos that prove it.

I can live with a check engine light...I might yank off my EGR and see how it does.

 

chimmike, where were ya with that little jewel when I needed it? I kid. rdHarper, as far as I'm able to discern from the EGR system on my 3vze, you can disable the EGR valve by removing the vacuum hose at the top of the EGR valve, or thoroughly restricting its' flow.

 

You're an ignorant idiot.....end of story!!

 

? Now is that really necessary? I'm a bit more than that. Anecdote: A brief account of an interesting or entertaining nature. Sorry to have been vague as to which type of anecdote I meant. It was the former. The latter describes the quote above.

 

A little uncalled for.

Getting back on topic. I'll share my experience. I'm not talking theory, or regurgitating text... I removed my EGR a couple days ago. The engine has noticeably more power on the highway and runs much smoother. It has an over-all healthier feel.

 

I've disconnected my egr valve, but am gettin some pretty loud pinging at higher rpms. I plan on completely removing it and doing the whole 10 ohm resistor thing in order to trick my computer to thinking that the egr valve is working. We will see how all of this goes.

 

I've had my EGR disabled for more than 4 months now and have the same experience as ChickenLover: more low end power, smoother power band, better throttle response, and improved mpg on the 3VZE. These improvements are noted with a brand new EGR valve, vacuum modulator, throughly cleaned vacuum ports in throttle body, and system verified working 100% properly by a Toyota Dealership. I have not had any deleterious effects with the egr disabled, timing advanced 16 degres and no pinging at all rpm (0-6k).

 

 

environment concerns, who is concerned! Dealers, part suppliers? Here's an idea. Once a year sale on EGR's Catalytic converters are a great boost to clean air and to show our support, we are selling all clean air equipment, parts at 1/2 price, darn, let's make it at cost just to keep our air clean.

NOT!

 

I think rdharper works for somebody...notice the condescending way he says "young man". Thats government talk.

 

ok, so, i've been reading all this and everyones views, and basically from whats been read and what common sense will tell you, or not so much common sense, but mechanical sense, a properly maintained and properly setup EGR system will work to any advantage it is set up to work as, and will improve fuel economy ect ect. But a poorly maintained, non correctly working EGR/vacuum system will rob you of gas mileage/emissions. So, all that said, ether way is about the same, Toyota engineered the engine to run with all that setup and if its in proper mechanical order it will work great, but if something is faulty the whole system goes down the drain.

 

Seems to me you glossed over this evidence in your final ruling, my experience points to the exact opposite of your conclusion. EGR system correctly running or not is detrimental to both fuel economy and performance but is favorable for emissions. Such is the general rule for any emissions related equipment, detrimental to performance and fuel economy.

 

digression on:
He who is of calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden.
Plato (427 BC - 347 BC), The Republic

That having been said, I do work hard at not coming across as arrogant. Arrogant is how I feel... 'tis my nature.

But it has nothing to do with age.

In the 60's when I was young, I felt nothing but contempt for the loud contingent of my generation that whined about their condition.

And each generation since... has been significantly worse.

Once we were a nation of wooden ships and iron men. Today we are nation of iron ships and wooden men... with notable exceptions.

Lastly, I view government, populated by the utopian socialists, as the worst manifistation of my generation.

No... I ain't no government agent.
digression off:

As to the original discussion of the egr... theory says that an egr can improve mileage without the loss of power. Whether that happens in practice or is worth the effort... its a legit question.

Sorry if I confused you.

 

sry for the newbie question but what does the reed valve do? and does that help emissions?

 

It's part of the air injection system, designed to inject air into the exhaust manifold inbetween pulses, allowing combustion to continue throughout the exhaust, especially at the catalytic converter.

 

What JEBSR5 has said is such a true statment. If the government/enviromentalists that make decisions/laws to provent pollution,
and require the car manufacturers follow, why can't, these same people follow up by requiring autoparts dealers to sell at a reduced price all year long.

I bet 50% of American's do there own maintainence, so of course if something is expensive your going to find an allternative. If they want you to recycle they need to make it simple, exspecially in a desposable country like ours.

Woody

 

Please excuse the noob naivity, but I just removed the EGR valve and blocked it off, and am getting ready to do a test run, but I have a couple of questions. 1st, I stuck my finger in the hole where the egr plugged in and there is a lot of nasty black crud with bits of metal in there. What is that from, how did it get in there, and how do I get it out? 2nd, I heard from a mechanic friend of mine that removing the EGR system will eventually result in burning up the valves. The egr valve hasn't been working right ever since the installation of my headers, and has been throwing a check engine code. It worked right for a while, and then stopped, then worked again intermittently, and now the check engine light has been on constantly because of the egr system. So I just pulled it. What should I do? Anybody got any ideas why my valves are so dirty inside?

 

would my truck run diffrent if my egr block off plate was leaking?

 

Yes, it would create a vacuum leak, among other things