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This is a discussion on Egr?? within the Firebird / WS6 forums, part of the Vehicle Specific category; I have a 1998 trans am. Since i have the stock LS1 intake its got the EGR. Can i just ...

  1. #1
    Awaiting Activation
    Join Date
    Dec 2005


    I have a 1998 trans am. Since i have the stock LS1 intake its got the EGR. Can i just take pull out the EGR hose. Will it hurt the engine or throw off any codes if i do. Thanks

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Thornton, CO

    Red Tint Jewelcoat
    2008 Trailblazer SS

    It would need blocked off. Otherwise your motor will be seeing un-metered air.

    Leave it on until you get a different intake.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  3. #3
    Veteran 0rion's Avatar
    Join Date
    Aug 2005

    98 Formula
    06 duramax

    You'll throw codes if you pull the hose. The codes will need to be edited out. You'll also have to get block off plates for the manifolds so you can remove those pipes as well and a 1 3/8" adjustable freeze plug for the manifold to seal it up.
    The only reason to pull the egr is cosmetics. You won't gain anything by pulling it. I found when I pulled mine that I started getting a lot more knock and had to smooth my part throttle timing so I didn't get "tip in" knock when going WOT. I'd say unless you just hate the way it looks it's best to be left alone. My opinion only.

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