Why did GM delete EGR and............???
Why did GM delete EGR and............??? So why did they delete EGR? Why isnt it used with the Ls6 intake? When I delete the EGR and install my ls6 intake on my 98 what makes the difference on why you dont need the EGR?
In my GM service manual it says the purpose of the EGR is to lower the combustion temperatures. Wouldnt you think the EGR would be beter to leave it in there because it reduces the temp?
In my GM service manual it says the purpose of the EGR is to lower the combustion temperatures. Wouldnt you think the EGR would be beter to leave it in there because it reduces the temp?
EGR is the devil.
It lowers combustion temps by injesting already burnt exhaust fumes which act like an inert gas and dont burn. It does however lead to a ton of carbon buildup and soot throughout the intake tract. This leads to pinging issues. GM pulled out egr cause they found they could meet emissions requirements simply with the smaller cam found in 2001+ ls1s.
It lowers combustion temps by injesting already burnt exhaust fumes which act like an inert gas and dont burn. It does however lead to a ton of carbon buildup and soot throughout the intake tract. This leads to pinging issues. GM pulled out egr cause they found they could meet emissions requirements simply with the smaller cam found in 2001+ ls1s.
That makes plenty of sense when your talking about injecting already sooty old exhaust air in the combustion chamber but the manual even says it may cause detonation and other things. I guess this is where geting a tune comes in? What about emissions? What about me with a bigger cam in my 98? Would I pass emissions without the EGR? Also what about temp, how many degrees would the temp rise?
Rip out the EGR. Plain and simple. With a proper tune, you can pass the sniffer with up to a 224/224 cam. If you have OBD-II emissions testing like we do in new york, then you can pass with any cam as long as the computer is tuned for it.
So do you think I would pass emissions if I installed the intake without any egr? I'm not getting tuned before emissions I know that for a fact. I'm not even on the road right now.
Originally Posted by senicalj4579
So do you think I would pass emissions if I installed the intake without any egr? I'm not getting tuned before emissions I know that for a fact. I'm not even on the road right now.
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To tell you the truth I not sure yet how their going to go about testing the car. I was under the impression that if your car is under 10 years old which mine is then it will be with a plug in i'm not sure, I could have that all wrong.
I think maybe I should wait because I may have issues with the long tubes I installed last march.
I think maybe I should wait because I may have issues with the long tubes I installed last march.
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If its like in Ma. When you register your car you need a safety check and an emisions test. Anything 1996 (OBD II) and newer is a plug in. Anything 1995 and older goes on the dyno. No its not that kind of dyno, it doesnt measure HP in any usefull way. After your 1st test you need an emision test every other year UNLESS you change your plates, or go more than 3 months after your sticker expires.
the answer is cost, when they went with the ls6 motor, they decided it was cheaper to produce an ls6 intake only, compared to both ls1 and ls6 intakes, thus why you no longer have egr on 01/02 engines
Originally Posted by Hennytime
the answer is cost, when they went with the ls6 motor, they decided it was cheaper to produce an ls6 intake only, compared to both ls1 and ls6 intakes, thus why you no longer have egr on 01/02 engines
I believe cost may have had a hand in it, but the LS6 intake also let the LS1 motor make the power GM wanted while using the smaller truck cam and eliminating EGR.
dumb question...but
Lets say I buy a used car...80+ K miles..I delete the EGR...some of that Intake cleaner should freshen up the intake a lil and get the soot and shyt outta there...correct?
Lets say I buy a used car...80+ K miles..I delete the EGR...some of that Intake cleaner should freshen up the intake a lil and get the soot and shyt outta there...correct?
Originally Posted by Pro52R
dumb question...but
Lets say I buy a used car...80+ K miles..I delete the EGR...some of that Intake cleaner should freshen up the intake a lil and get the soot and shyt outta there...correct?
Lets say I buy a used car...80+ K miles..I delete the EGR...some of that Intake cleaner should freshen up the intake a lil and get the soot and shyt outta there...correct?
you could use some seafoam to clean the carbon out of the cylinders and valves though.
Ct's a scan test, get yourself the tunign software, or search around for a tuner that will turn the stupid error codes off and you will pass with the EGR gone.
Whoever came up with the idea, of pumping exhaust into the intake tract.. is an idiot LOL. It's as bad as the whole idea of pumping clean air into the exhaust for the cat's to fire (AIR system) LOL, they'll heat up eventually.
Whoever came up with the idea, of pumping exhaust into the intake tract.. is an idiot LOL. It's as bad as the whole idea of pumping clean air into the exhaust for the cat's to fire (AIR system) LOL, they'll heat up eventually.
