EGR delete

[SHOZ123]

I thought about it for about 2 seconds....

 

[stephen newberg]

Oh well, cannot get everyone on board, I guess...



pax, smn

PS: hey, do you smoke?

 

[32MTX]

Hey my names Todd,

I smoke

have no EGR

have no catalytic converters

burn oil like a damn incenerator

probably can't pass emissions with a crooked inspector

take the long way home on backroads, causing me to burn more gas/oil/pollute more, also gives you more time to smoke another cig


nice to meet you

 

[stephen newberg]

Thankfully I live on Vancouver Island, swept by clean westerlies off the Pacific, so, nice to meet you too. But you might get a less cheerful greeting from at least a few of those down wind from you.



pax, smn

 

[NevurMind85]

Hey my names Todd,

I smoke

have no EGR

have no catalytic converters

burn oil like a damn incenerator

probably can't pass emissions with a crooked inspector

take the long way home on backroads, causing me to burn more gas/oil/pollute more, also gives you more time to smoke another cig


nice to meet you

hahahahahahaha this is hilarious and i have asthma.

 

[St Louis SHO]

I have none of the original smog equipment on my V8 cars.

If you think that cars make the air ******, you need to rethink the situation, and let go of the tree...

 

[stephen newberg]

I have none of the original smog equipment on my V8 cars.

If you think that cars make the air ******, you need to rethink the situation, and let go of the tree...

If you had ever lived in, for instance, LA, before and after car emission gear, you would likely think differently. This is not really even a question of fact, but of course, everyone is entitled to an opinion.

pax, smn

 

[showec8]

I don't think pulling the egr system out of your car can't do half as much to the air as the crap that I have seen and experinced in iraq. The put so much crap in the air it makes our emissions look like what a birthday candle to a tire fire. What reads the egr flow for when you block it off and it throws the code saying insufficant egr flow?

 

[SHO U UP]

I don't think pulling the egr system out of your car can't do half as much to the air as the crap that I have seen and experinced in iraq. The put so much crap in the air it makes our emissions look like what a birthday candle to a tire fire. What reads the egr flow for when you block it off and it throws the code saying insufficant egr flow?

Basically nothing is reading the EGR if it's blocked off, it just knows it isn't there when its supposed to be. The cars computer is always monitoring the sensors to compensate for what it feels needs to be adjusted. The EGR is its own system and if it is deleted, it'll toss a code almost immediately. Air flow, fuel, exhaust, temps, etc are all being monitored thousands or more times per second so not too much will bypass the CPU. That's why a tuner is needed to alleviate the CEL.

 

[SHOZ123]

The Differential Pressure Feedback EGR (DPFE) sensor reads the EGR flow. You are not going to get around it without turning it off with a tune as stated.

 

[stephen newberg]

And even doing so, you will do nothing for the performance of the car and will do negative things to the air around you. Its there for a reason. Leave it alone.

pax, smn

 

[zak]

With some cars, EGR actually increases performance slightly. I forget the reasoning but that little factoid stuck out to me, since it was so strange.
.

This is correct. The use of EGR reduces the engine's pumping losses, increasing its efficiency. There are fleet owners that are using tuning software to actually increase EGR flow on their fleets, to improve mileage especially at highway speeds. Using EGR also helps reduce peak combustion temperatures*, important under high load and high ambient temperature so you don't melt a piston as an example.

Why don't engines just use more EGR for further increases in fuel economy? There are limits at which the spark will not ignite the mixture reliably if too high a level of EGR is used.

When gas went above $4 a couple years ago I seriously considered adding EGR to my Federal (no EGR) 1995 MTX.

Would guesstimate that taking the EGR off your car will cost you about 1 mpg on the highway. Hard to estimate the around town effect as the engine control strategies are complex.

* reducing peak combustion temperatures reduces the synthesis of prompt NOx (major smog ingredient), the key reason why EGR was added to car engines.

stephen, while I agree with you in principle and in spirit, fact is in your location you are breathing air from China/the orient, where few vehicles have EGR over there for lack of regulation, saving production cost etc. Products of all the coal combustion over there (no/few stack scrubbers) should be a much larger concern.

 

[stephen newberg]

stephen, while I agree with you in principle and in spirit, fact is in your location you are breathing air from China/the orient, where few vehicles have EGR over there for lack of regulation, saving production cost etc. Products of all the coal combustion over there (no/few stack scrubbers) should be a much larger concern.

Ya, no doubt you are right and there is no way to be happy about that, but at the same time, every little bit in the right direction helps, and removing ERGs is simply the wrong direction. If there were gain from it, I could see it a bit, but there is not, and as you point out, there is actually more likely loss, even if small.

Personally, I think China and India are by a good chunk the greatest dangers to the world from an air pollution standpoint, but I do not see that there is a lot that we as individuals can do about it other than voting for representatives that are firm on that sort of thing, hoping that eventually their actions will make some difference. But an ERG, by just leaving it alone, that is something, though very small, that each person can do on their own. Plus, you might save fuel costs as well as a bit of air. It amazes me that anyone argues against that for no performance gains. People are not always very sensible, I guess...

apx, smn

 

[bacernate]

Thanks for somebody actually explaining how a egr system works. Doesn't matter if you lower intake temps 30 degrees if your cylinder temps increase.
The whole purpose of egr is to lower nox. Nox is very bad for the environment. There are no benefits to be had by removing it.

 

[SHOZ123]

Sure am glad that it is no longer needed on newer engines.

EGR is only used during highway speeds and, while still in closed loop, moderate acceleration. It is actually a band aid for poor engine design.

 

[stephen newberg]

Many modern engine designs are far more integrated in their overall outputs, in power and in pollutants. We call that progress.

None of which alters the simple fact that removing the EGR from an engine designed to use it does no good for performance, likely actually hurts it a bit, and certainly does no good for the atmosphere that we all have to breath. So best to leave it there, and properly functioning if it came with the vehicle.

pax, smn

pax, smn

 

[SHOZ123]

On the highway in the summertime with +90F temps it will reduce intake temps at least 40F.

 

[cowboy0ne]

You can buy a resistor for the 80s model 302 and 351 Windsor that plugs into the pigtail of the egr valve that sends a constant signal the egr valve is working properly and fools ur ecm so u can can all ur emisions crap. Look into it for the sho. And by the way I dip and I rip the emisions crap off ever car and truck I ever owned. IT KILLS HORSE POWER!!!!!!!!

 

[stephen newberg]

<sigh>

pax, smn

 

[SHO U UP]

Holy back from the dead thread Batman.