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which exhaust manifolds do i have?

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Old 01-04-2009, 09:56 PM
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Default which exhaust manifolds do i have?

Im putting stock manifolds back on my car to help my turbo spool quicker. I have stock manifolds but i dont know if they came off a 99 LS1 or a 01 LS1. How can i tell the difference? Thanks
Old 01-04-2009, 10:40 PM
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uh egr was eliminated for 01 and 02 correct???
Old 01-04-2009, 10:51 PM
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i wanna order a 2.5 ORY but im just wondering if there is a difference in the manifolds besides the EGR.
Old 01-05-2009, 05:50 AM
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01-02 no EGR provisions




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