Is doing an EGR delete a good idea?
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
Yeah, I think they put it on the early F bodies and trucks more as a precautionary band-aid. Once it was determined it really wasn't needed, it was dropped.
TECH Fanatic
Joined: Jun 2011
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From: dayton, ohio
EGR was dropped with the 2001 LS1 cars. Deleting it will make the engine bay look better but will throw an SES light unless it's tuned out. I got rid of it on my 1999 TA years ago, got it tuned out, and have noticed no negative results.
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From: Shlumpt, TX
Thread Starter
Teching In
Joined: Jul 2024
Posts: 41
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From: Wisconsin
that is a really stupid thing to say. First off how would you know they did that unless you work for them? Second why hasn’t every guy who posts on a car forum been visited then? You think most of these crazy build cars would ever be able to pass emissions? So clearly there really isn’t that much of an issue. Don’t worry I’m sure you have bigger problems like UFO’s and Bigfoot to worry about.
TECH Regular
Joined: Jun 2021
Posts: 497
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From: Shlumpt, TX
Let me guess, the next thread you are going to post is about "Best tuners to use to delete my catalytic converters and egr???"
Get over yourself. I am not the only one who shares this sentiment. No I don't think they are coming after every single one of us. But they could. People posting threads asking for emissions delete devices and what not is just one way to get someone shut down. The federal and state governments do in fact care about what guys do with their cars, it is literally the entire reason for inspections lol and yes not everyone has inspections I get it. It still doesn't detract from the fact you are breaking the law.
I apologize if I offended you and traumatized you by saying you could be an EPA agent. I am one of the first ones to curse the EPA name every day of the week. They make their own laws unconstitutionally and are not at all what they were originally intended to be. With the Chevron Deference ending things may change but unfortunately they are still a bureaucratic body committing crimes. My mistake, let's move on...
Get over yourself. I am not the only one who shares this sentiment. No I don't think they are coming after every single one of us. But they could. People posting threads asking for emissions delete devices and what not is just one way to get someone shut down. The federal and state governments do in fact care about what guys do with their cars, it is literally the entire reason for inspections lol and yes not everyone has inspections I get it. It still doesn't detract from the fact you are breaking the law.
I apologize if I offended you and traumatized you by saying you could be an EPA agent. I am one of the first ones to curse the EPA name every day of the week. They make their own laws unconstitutionally and are not at all what they were originally intended to be. With the Chevron Deference ending things may change but unfortunately they are still a bureaucratic body committing crimes. My mistake, let's move on...
EGR went away in 2001 in the LS Fbodies, and 2003/4 in the trucks. None of the 4.8l trucks had it, ever. Figure that out.
Yup my daily 2009 Civic has it on it.
Now to explain what it does...
EGR put exhaust back into the Intake Manifold so it would be sucked into each Cylinder as a "filler". It was already hot so it helped atomize the gasoline better when the Injectors squirted it in. The reason why I use the term "filler" is because N/A Engines run off of vacuum so with that exhaust in the runners that was less fresh air/gas mixture going into the Cylinder getting combusted. You can only get so much volume in a Cylinder of a N/A Engine. Since it was exhaust and nothing to burn for combustion it lowered the Cyl Temps also.
That was the "theory" behind designing EGR to do what it does.
Does it work like that? No idea because none of my LS cars have it and they are tuned 2* under knock threshold with a 12.85 AFR at peak.
I clearly care about gas mileage...
Yup my daily 2009 Civic has it on it.
Now to explain what it does...
EGR put exhaust back into the Intake Manifold so it would be sucked into each Cylinder as a "filler". It was already hot so it helped atomize the gasoline better when the Injectors squirted it in. The reason why I use the term "filler" is because N/A Engines run off of vacuum so with that exhaust in the runners that was less fresh air/gas mixture going into the Cylinder getting combusted. You can only get so much volume in a Cylinder of a N/A Engine. Since it was exhaust and nothing to burn for combustion it lowered the Cyl Temps also.
That was the "theory" behind designing EGR to do what it does.
Does it work like that? No idea because none of my LS cars have it and they are tuned 2* under knock threshold with a 12.85 AFR at peak.
I clearly care about gas mileage...
10 Second Club
Joined: Aug 2010
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From: Harford Co. Maryland
Up to you ....Clean Air Act Vehicle and Engine Enforcement Case Resolutions | US EPA
not saying I have or haven't....just in case
not saying I have or haven't....just in case
TECH Regular
Joined: Jun 2021
Posts: 497
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From: Shlumpt, TX
https://www.justice.gov/usao-sdny/pr...ile/1374621/dl
Search the word “duramaxforum”. This is a case against EZLynk and their delete tuning. They use forums and facebook pages to show that people are deleting emissions devices from their trucks.
Not a conspiracy theorist lol
Search the word “duramaxforum”. This is a case against EZLynk and their delete tuning. They use forums and facebook pages to show that people are deleting emissions devices from their trucks.
Not a conspiracy theorist lol
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From: Schiller Park, ILL Member: #317
I see you are in WI, which is not too far from me. Here in my area of IL, there are no stations anywhere that sell regular 87-93 pump gas that is not E10. How easily can you find ethanol free fuel in WI, and what section of WI has this?
Shops maybe, but not a specific individual. USEPA prosecutorial resources are not vast enough to waste time on various single individuals, which is why they target "high-profilers" like shops/businesses, retailers, etc. As an individual, I worry not. On the other hand, a state EPA will obviously target individuals that might be trying to beat or avoid local testing, so that's a valid worry if you are involved in such...but, outside of CA, even the state agencies don't aggressively focus on individuals (other than typical testing practices at designated test centers) as, again, resources are limited.
Having said that, I would like to see their resources be even MORE limited.
As mentioned above, the LS1 engine, when installed in an F-body, did come with EGR through the 2000 model year. The C5 version (which used a slightly different cam through 2000) did NOT have EGR for any model year. In 2001, the LS1 engine was updated and standardized between F-body and C5 (both models receiving the LQ4/9 truck cam) at which point neither received an EGR system.
Having said that, I would like to see their resources be even MORE limited.
As mentioned above, the LS1 engine, when installed in an F-body, did come with EGR through the 2000 model year. The C5 version (which used a slightly different cam through 2000) did NOT have EGR for any model year. In 2001, the LS1 engine was updated and standardized between F-body and C5 (both models receiving the LQ4/9 truck cam) at which point neither received an EGR system.
Thread Starter
Teching In
Joined: Jul 2024
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From: Wisconsin
I live north of Green Bay and every gas station offers premium gas with 0 ethanol. 91 or 93 octane because so many people have boats, atv’s, utv’s, bikes, jet ski’s, and other stuff that does not run right and gets messed up using ethanol gas. I used to live in Racine near the Illinois border and most don’t offer that but there are certain stations that do offer non ethanol gas. It’s usually premium but I have seen a few that offer 87 with no ethanol but that is pretty rare. Going north usually past Sheboygan you will start seeing some stations with it but once you pass Green Bay they all have premium non ethanol gas.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
I live north of Green Bay and every gas station offers premium gas with 0 ethanol. 91 or 93 octane because so many people have boats, atv’s, utv’s, bikes, jet ski’s, and other stuff that does not run right and gets messed up using ethanol gas. I used to live in Racine near the Illinois border and most don’t offer that but there are certain stations that do offer non ethanol gas. It’s usually premium but I have seen a few that offer 87 with no ethanol but that is pretty rare. Going north usually past Sheboygan you will start seeing some stations with it but once you pass Green Bay they all have premium non ethanol gas.
Thread Starter
Teching In
Joined: Jul 2024
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From: Wisconsin
depending on where you are in Illinois you may have some closer in Wisconsin. Usually the further you are from major cities the easier you will find it. I think a quick google search or something and you could probably locate them fairly easy. If it’s reasonable to do so I would recommend using the non ethanol gas. Even in my car and motorcycles I notice they run better. Mpg and performance is improved but it also runs cleaner so less buildup in the valves and intake. If you have any boats, jet skis, snow mobiles, atv’s or even lawnmowers and yard equipment you will notice a big difference in how they run.
Can definitely vouche for the Non-E gas being better. Down here in Florida where it's constant swamp *** humidity that ethonal absorbs moisture. Switched over to 89 Non-E recently in a couple of my vehicles just to try it because a station down the street has it and it made a difference. Buddy of mine found a station that sells 93 Non-E here local I haven't been there yet.