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Gains from removing AIR and EGR?

This is a discussion on Gains from removing AIR and EGR? within the External Engine forums, part of the LSx Technical Help Section category; I'm putting in new headers soon and i'll have the opportunity to have all my codes deleted so I was ...

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    Rice Hungry GottaHaveLS1's Avatar
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    Gains from removing AIR and EGR?

    I'm putting in new headers soon and i'll have the opportunity to have all my codes deleted so I was thinking of getting rid of these emissions systems. I don't have race style headers so i'll have to order some block off plates. The EGR doesn't look like it would be hard to take out but the AIR system runs to the back of the intake manifold. What have you guys done? any tips? Could more rwhp be gained by removing these things?
    1999 Trans Am M6
    SLP Short Throw, Lid and CAI, BMR STB and SFC, UMI PHB, Pacesetter LT's and ORY, Magnaflow Catback, DMH 3" E-Cutout, LS7 Clutch, Motive 4.10, 160 T-Stat, MSD, !AIR, !EGR, 17x9.5 Chrome C6's wrapped in Hankook 275/40/17

    Tuned at Mongillo Motors in New Haven, CT

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    The A.I.R. runs to the exhaust manifolds not the back of the intake.

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    Pathelogical Liar BlackLT1Z28's Avatar
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    You won't really see any gains because those systems are shut down at WOT.

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by BlackLT1Z28 View Post
    You won't really see any gains because those systems are shut down at WOT.
    oh ok, i might just get rid of the EGR then, cuz i'll get the ls6 intake someday and i don't want to have to pay twice to have my codes deleted.

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    Junior Member lopezog's Avatar
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    i sold my stock 01 ss coulndt make the payments . but just bought a 1994 z28 auto with 91000 miles and i was impressed that it does go almost like my ss. got a Q WHATS THE BIGGEST DIFFERENCE BETWEEN THE LS1 AND LT1 THE FEEL REALLY close . it felt nice that with this 94 i already smoked a few mustangs and cant forget bout the pain in the butt imports.go chevy

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    if theyre close, with 91,000 on the LT1, then you either have a bad memory of ss speed, or that LT1 has work done to it...night and day difference in my opinion between the engines
    Douglas Charles Horchler

    "Great is the power of steady misinterpretation" Charles Darwin


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    Impounded MikeSomething's Avatar
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    The difference between LT1's and LS1's?...Here:





    LT1's have an iron block, and not a whole lotta top end.

    Quote Originally Posted by 9t8z28 View Post
    The A.I.R. runs to the exhaust manifolds not the back of the intake.
    He's probably talkin about where the two hoses run to the tee fitting behind the manifold.

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by lopezog View Post
    i sold my stock 01 ss coulndt make the payments . but just bought a 1994 z28 auto with 91000 miles and i was impressed that it does go almost like my ss. got a Q WHATS THE BIGGEST DIFFERENCE BETWEEN THE LS1 AND LT1 THE FEEL REALLY close . it felt nice that with this 94 i already smoked a few mustangs and cant forget bout the pain in the butt imports.go chevy
    what does this have to do with my thread?

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Quote Originally Posted by GottaHaveLS1 View Post
    what does this have to do with my thread?
    No shit. That was out of left field.

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by MikeSomething View Post

    He's probably talkin about where the two hoses run to the tee fitting behind the manifold.
    That's what i'm talking about. but I don't think i'm gonna remove it anyways

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    Formulatastic yellowv's Avatar
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    Get rid of both of them especially if you can get the codes deleted. I got rid of both of them on my car in less than an hour. Makes the engine bay look a lot cleaner.

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    Senior Member 35thAnniZ28's Avatar
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    Quote Originally Posted by yellowv View Post
    Get rid of both of them especially if you can get the codes deleted. I got rid of both of them on my car in less than an hour. Makes the engine bay look a lot cleaner.
    it surely does

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    Quote Originally Posted by yellowv View Post
    Get rid of both of them especially if you can get the codes deleted. I got rid of both of them on my car in less than an hour. Makes the engine bay look a lot cleaner.
    + 2

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    Member SS-Power's Avatar
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    Quote Originally Posted by MikeSomething View Post
    The difference between LT1's and LS1's?...Here:

    Click for full size



    LT1's have an iron block, and not a whole lotta top end.


    He's probably talkin about where the two hoses run to the tee fitting behind the manifold.

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    ME!!
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    how do you get he codes deleted if you put on race headers?

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    Quote Originally Posted by kebie05 View Post
    how do you get he codes deleted if you put on race headers?
    You either have to buy or know someone with a hand held tuner to delete the codes. Be better to get a tune that way you get the maximum benefit from the headers and also get the the codes deleted. On another note, deleting the EGR and AIR wont give you any power addition. It will just reduce some weight and clean up the engine bay.

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    Double Tap Heartbreak1's Avatar
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    Quote Originally Posted by NvyBluMtlc02WS6 View Post
    You either have to buy or know someone with a hand held tuner to delete the codes. Be better to get a tune that way you get the maximum benefit from the headers and also get the the codes deleted. On another note, deleting the EGR and AIR wont give you any power addition. It will just reduce some weight and clean up the engine bay.
    Its well worth it tho for that extra room.

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    Member Castle's Avatar
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    Quote Originally Posted by MikeSomething View Post
    Click for full size
    That's Hawt!

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    CAM mmmmmm... Toes's Avatar
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    +1 to just get that crap out of the way! zero for performance gain.

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    ME!!
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    i didnt know anything got removed from the engine bay i just thought some functions were turned off going to the headers. does any one have abefore and after pic so i can see what all changes. so if i do a dyno tune after the headers, they will be able to turn off the ses light from the codes? thanks

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