EGR - to delete or not delete, plus what happens (if anything) after its removed?

this myth that the EGR being removed will hurt your engine is the same as the myth as bigfoot and the tooth fairy lol.

I wish I knew where people get this stuff they are smoking when they make up these fantasy fairytails about things they don't understand and that isn't even the slightest way believable yet they still believe it.

 

It's not a myth if you can measure raised exhaust gas temperature. Higher EGT = higher combustion temps.

 

im not rehashing all this again in another thread.

it does raise temps 2-3 degrees, I never denied that, but far from it being enough to damage anything.

clearly you think it dramatically leans out the engine but cant show proof of it ever hurting an engine because of it so until you can, it is just your opinion, without proof to back it up, that thousands of engines on the road today driving for hundreds of thousands of miles damage free are somehow being hurt by not having it.

do you work for the EPA? you seam to pop into any thread anywhere the EGR is discussed just to insist the EGR must be kept even though there is no proof it ever hurt a single engine it was disabled on.

 

It's far greater than 2-3 degrees when talking about EGT's. And I've provided numerous resources discussing the downsides. Some just seem to ignore it.

And this is the only EGR thread I've participated in. And considering the number of 2 stroke motorcycles in my garage I'm far from an EPA shill.

I do however have a vast understanding of internal combustion engines, tuning them, and rebuilding them from my years of racing motorcycles, 2 and 4 stroke.

 

I have been working on engines of all types for over 40 years and rebuilt many engines with and without EGR working and NEVER seen any difference in an EGR engine vs a EGR deleted engine.

we are done here

 

Edit: nevermind, not worth it

 

until either of you can produce proof of engines damaged directly as a result of removing or disabling the EGR then yes, give it up, because your excuse why it shouldn't be removed does not hold water.

that said, I do agree its better to keep the EGR and all that but I do NOT agree it hurts the engine if it is disabled. its as simple as that, im not arguing the benefits of having it, I agree with you there, but I do not agree with your claims of the harmful effects if its disabled which would be very easy to demonstrate and should have thousands of burned up engines to show as proof if those claims were remotely true.

 

Iirc newer 3.4 engines dont even have an egr system, early ones did....
Ive been on ttora for years as well as pirate, lots of 3rz owners doing this- never-not once heard of any issues coming from doing it.


As far as the comment stating "it is stupid to block off an egr valve because your not smart enough to fix one." Thats really not why people block them off- its the price of the parts to fix ($200+ for a vsv and temp sensor) something that you can easily delete for almost free with 0 ill effects...

 

Most gas engines don't use it anymore. With the prevalence of variable valve timing the EGR became obsolete for the most part. The variable lift and timing systems do a better job at regulating economy, performance and emissions.

 

From what ive been seeing alot of them actually do still have them... About every toyota still made actually..
The 3.4 which i dont believe ever was a vvt engine only had it for one year i believe and then it was done away with.
I worked on a vvt tundra that had one a while back ago and I know a 2007 sienna (3.5) has one as well.

 

Neither Tacoma engine has it. But you are right. There are plenty of VVT engines that still have it. However many don't as they no longer need them.

I think it's coming back on the new 3.5 with Atkinson cycle though. But that's a cooled EGR system.

 

I’m finishing up a EGR delete. What do I do with the coolant lines?

Do I run them back through the iac valve? Or cap them off??

It seems like most people are capping the off which doesn’t make sense because it was going through egr valve and from there it went into the aci valve and back to the engine!?


@knuckleduster271

 

I stuck bolts in mine. Now that I have the intake pulled off I’ve removed the hoses at the source.

 

Don't mess with emissions on these newer vehicles. It's not going to add any amount of significant power or make you're engine last any longer. Gas engines have already been engineered to run just fine with all the emissions crap and later on down the road if your state or county wants to start checking the emissions crap you will be screwed.

Those that have deleted their diesels are now being tracked down by the EPA. States, like mine that don't have emissions checks are fine for deleting but how long is that going to last? The same for gasoline engines. There are very few gasoline powered "everyday" vehicles that will gain anything in mileage or performance by disabling various emissions systems and believe me, I am no tree hugger.

You want to build a race car for the track only? Fine, but they are now going after that as well when it comes to diesels and I wouldn't be surprised if they start going after modified track cars with gas engines in the future.

 

When you have computer controlled engine in a newer gas powered vehicle why would anyone try to disable any of the emissions devices unless they are going to race it. It makes no sense and does nothing to the longevity of the vehicle or the fuel mileage. It's just asking for problems down the road. When you disable anything it causes problems elsewhere. Problems that may not be realized for 50,000 miles or more. Problems that may not be realized until your state or county decides to start doing smog checks and visual inspections.

Diesels, I can understand but not gas unless you are going to track it and the EPA has just started to go after diesels. Even those that are only used for off-road/racing use.

Seriously, does anyone on this forum actually believe it's a good idea to get into their engine and start disconnecting various valves, pumps etc., etc. hoping to gain 1 horsepower or 1 mpg with the EPA out there? Not to mention, the company that engineered the engine we all drive whether a V-6 or the 2.7 has already proved they can last 500,00 miles plus?

 

Yes. I deleted mine. If you had seen the condition of the intake manifold from 160,000 miles of it you would understand. Just cleaning the buildup probably netted 2hp.

 

For many it’s aesthetics. Less crap in the engine bay. Others may have a failure in the EGR system. Some have the OCD motivation to strip an engine to its basic operating components.

 

I have a 3.4 swap in my samurai. It ran good at first and now I believe it’s a bad ecu or some sensor putting it in safe mode. Any body know of a place that sells ecu that would delete as much sensors as possible but still have it run. I trying to simplify it as much as possible. I see it has a wheel sensor ripped off would that do it?

 

Yes 10k resistor in the plug For the EGR. I did mine because the dumb hose kept breaking for some reason and they are like $150. Go to LCEngineering.com and they have block of plates for the 5vzfs engine egr.

Also, I don’t understand how or why but my emissions actually test BETTER than they did when my egr was operating....
Edit didn’t realize how old this was

 

I Only have circumstantial evidence that the EgR had anything to do with it but, I had better readings for CO, CO2 and NOx In the last emission test I did, than I had when my EGr was operating