Need EGR-A.I.R. System Clarification!
12-02-2003, 06:02 PM
#1
Staging Lane
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Need EGR-A.I.R. System Clarification! Please Help!
I have been searching this forum for the past half hour and have been unable to find exactly what I am looking for. I need to eliminate the EGR system for a non-emission header install and want to know the facts:
What benefit does the EGR have, why was it implemented in the first place?
What needs to be removed to completely eliminate the system?
What needs to be done to prevent the computer from throwing a code?
I have been told by a GM mechanic that removing this system can actually cause the motor to run poorly and loose power as it was designed to run with it, is that true?
Is there enough benefit in removing this system to justify doing so? What are those benefits?
Is this system the same as the “A.I.R. system” people refer to removing when installing non-emission headers? If not, what is that systems purpose, process for removal, and benefits in doing so?
I would really appreciate any help you can offer, I never do things without knowing all the facts. I am going to create step by step instructions for the removal of this emission system(s) that can be easily followed without any complications.
Thanks:
I have been searching this forum for the past half hour and have been unable to find exactly what I am looking for. I need to eliminate the EGR system for a non-emission header install and want to know the facts:
What benefit does the EGR have, why was it implemented in the first place?
What needs to be removed to completely eliminate the system?
What needs to be done to prevent the computer from throwing a code?
I have been told by a GM mechanic that removing this system can actually cause the motor to run poorly and loose power as it was designed to run with it, is that true?
Is there enough benefit in removing this system to justify doing so? What are those benefits?
Is this system the same as the “A.I.R. system” people refer to removing when installing non-emission headers? If not, what is that systems purpose, process for removal, and benefits in doing so?
I would really appreciate any help you can offer, I never do things without knowing all the facts. I am going to create step by step instructions for the removal of this emission system(s) that can be easily followed without any complications.
Thanks:
12-02-2003, 06:32 PM
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Well, the EGR and AIR are two different things. EGR takes burnt exhaust and feeds it back into the motor for a second pass. AIR injects clean air into the exhaust to help light the catalytic converters quicker. You will need LS1 edit to prevent the PCM from throwing a check engine light. I have removed both systems from my car with no adverse effects. Only Pro I have found is that it makes it easier to work on these beasts and loses a little bit of weight.
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12-02-2003, 11:15 PM
#8
i !egr/!air and other then the egr code theres hasnt been any problem at all.. my LT's have the provisons but i deleted the systems anyway 
. just make sure you have an intake block off plate or ls6 intake.
http://www.ls1camaro.net/sections.ph...ticle&artid=70
. just make sure you have an intake block off plate or ls6 intake.http://www.ls1camaro.net/sections.ph...ticle&artid=70
12-03-2003, 08:35 AM
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You can get a Predator and then a custom tune to get rid of the codes also. I used a EGR block off from a newer GM Truck 5.3 to plug the EGR hole in my intake. If you do a search you can find the part number for it. Freeze plugs work good as well I just liked the look of the GM part.
12-03-2003, 09:44 AM
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AIR is used to provide some clean air during startup for
the cats to "light off" with (fanning the coals so to
speak). In the old days they used to run it full time to
provide excess air to the cats.
EGR provides two "benefits". One, it dilutes the cylinder
air charge, reducing peak combustion temps and cutting
the formation of oxides of nitrogen. Two, it can cut the
pumping losses at low throttle as you don't have to draw
across the nearly-closed throttle but can huff in spent
gas. This makes your part-throttle response suck but
improves cruise gas mileage a fair bit.
Mostly it's just dead weight, unless you get inspected.
Or wear sandals to Save The Planet meetings.
the cats to "light off" with (fanning the coals so to
speak). In the old days they used to run it full time to
provide excess air to the cats.
EGR provides two "benefits". One, it dilutes the cylinder
air charge, reducing peak combustion temps and cutting
the formation of oxides of nitrogen. Two, it can cut the
pumping losses at low throttle as you don't have to draw
across the nearly-closed throttle but can huff in spent
gas. This makes your part-throttle response suck but
improves cruise gas mileage a fair bit.
Mostly it's just dead weight, unless you get inspected.
Or wear sandals to Save The Planet meetings.
12-03-2003, 11:28 AM
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Thanks for all the good info, It seems less technical than I assumed. I am just going to tear all that **** out. And as far as emissions go, hopefully the excess crap in the air will help kill a few of these damn geese that **** on my cars every day.
