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Why have EGR and AIR?

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Old Jun 13, 2006 | 01:03 PM
  #21  
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yes your ses light will come on. youll have to have the code completly deleted form the pcm. hptuners and ls1edit can do this. you can make your own block-off plates or buy them from speed inc. www.ls1camaro.net has a complete write up on how to properly delete the systems. And yes its the same process on a camaro as a trans am. As for inspections i cant help you there as we dont have any here in AL.
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Old Jun 13, 2006 | 01:04 PM
  #22  
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Taking off the AIR and EGR, adding long tubes, will make most cars nearly identical under the hood all other mods held constant. You should always have the codes tuned out if you decided to remove them. You don't need to but it is an automatic FAIL at emissions if your SES is on.

Originally Posted by Camaro Rick
So if I delete my EGR, is there a way to make it look like the 01-02 under the hood so I could pass any inspection? or do they have block off's and such too. Would there be a need to clear any codes after and LS6 manifold and egr delete?
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Old Jun 13, 2006 | 03:05 PM
  #23  
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Thanks for the info. Right. I'm sick of seeing the SES light. My 3.8 f-body had it on for almost 2 years. Anyone know of a good dynotune in new england? It's very limited here in NH.
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Old Jun 13, 2006 | 03:38 PM
  #24  
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If your in Cali, then you must deal with this stuff or is there a way around this smog crap?
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Old Jun 13, 2006 | 05:58 PM
  #25  
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Another question here:
If you have LT headers with a catted-Y, is it better to keep the AIR system? or does it not matter?
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Old Jun 13, 2006 | 06:04 PM
  #26  
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Originally Posted by Camaro Rick
So if I delete my EGR, is there a way to make it look like the 01-02 under the hood so I could pass any inspection? or do they have block off's and such too. Would there be a need to clear any codes after and LS6 manifold and egr delete?
You will still need to clear the codes because you have a pre '01 car which was put into the computer to have the EGR and AIR. If you are actually where they inspect under the hood, then you would be screwed anyway even though it looks just like an '01 or an '02 because your VIN will tell them what year your car is.
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Old Jun 13, 2006 | 06:15 PM
  #27  
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Ok, deleting AIR and EGR will have no effect on performance, although you will save the weight by removing them both. If you remove them you will want to have the codes deleted out to prevent the SES from coming on. If your state has a strict visual emissions you can get away with EGR by also getting an LS6 Intake which does not have the EGR hole in it, and they may possibly nail you on the AIR delete. Every visual i have witnessed was more of the guy checking to make sure the car has cats on the exhaust.
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Old Jun 13, 2006 | 06:15 PM
  #28  
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Shouldn't really matter. The AIR system heats up the CATS faster to keep emissions down even on a cold start. It shuts off after a few minutes of normal driving.

Originally Posted by BLCKBRD
Another question here:
If you have LT headers with a catted-Y, is it better to keep the AIR system? or does it not matter?
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Old Jun 13, 2006 | 09:57 PM
  #29  
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Originally Posted by sdbrown84
It was the cam, but I beleive it has a longer duration than the 98-02 models. That is why those cars, combined with the LS6 intake and better manifiolds will tend to dyno better stock numbers than 98-00 cars.
i think you got it backwards, i believe the early cars had the bigger cam but didnt have the ls6 intake, which is why all years dyno all over the place, its hard to say that most 01-02 cars dyno higher than than the 98-00 ones because the range is still the same for all years, generally around 300 plus or minus. unmodded i think the differences in the cars balance out overall.
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Old Jun 13, 2006 | 10:37 PM
  #30  
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ok my question is...

say you delete the codes from your computer, you switch over to an LS6 intake... will the smog shops computer KNOW that your supposed to have AIR and EGR?? Or does their computer not know the difference since you deleted the codes out of your cars computer? I was just a little confused when you said they got the info from your VIN#...
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Old Jun 14, 2006 | 03:47 PM
  #31  
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I think the inspection guy would have to know that your car need egr, you could probably tell them that the 00 and up didn't come with one..or better yet let a 01 or up get inspected right before yours
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Old Jun 14, 2006 | 05:24 PM
  #32  
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Well, I would assume that inspection facilities have printouts - things they should check whether they're operational or not, in any 98-00 owner's case, I would think it would say "EGR" and "AIR" on there. So I'd be screwed if I tried to get my 2000 inspected without either.

I can't imagine a close to stock car failing a sniffer test although it's had the codes removed. The only way would be if it were on a cold start.

Well. I'll just put my LS6 on once my car gets inspected...maybe within the next year I'll save up for a new LS6 with EGR fittings and sell the one I have now.
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Old Jun 14, 2006 | 06:08 PM
  #33  
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do they actually look under the hood on inspection at other states? all they did with my car was plug a wire into my obd2 port then it didnt have any codes thrown so i passed. they didnt check smog or anything else. just all my lights brakes horn .
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Old Jan 13, 2007 | 12:10 PM
  #34  
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As far I understand, CA requires visual. I heard from a Reno station yesterday that CA was now requiring the use a dyno during the test. I can only assume that either they require this to get better 'loading' results, or they are now going to fail vehicles due hp numbers above the oem specs? If that we true, that's pretty much screws anyone with a cam....
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Old Jan 13, 2007 | 12:32 PM
  #35  
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jeeze, way to resurrect an old thread.....well as long as it's back i have a question. i have an 02 (which means it has no egr). im looking to get a set of lt's but most if not all of the lt's for model years 01-02 say they have the egr/air fittings. my question is why would they make aftermarket headers with egr for these years if the cars themselves dont have them? also, if i buy them, can i install them or would i have to get egr blockoff plates or something even though i dont have egr?
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