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EGR pipes, header install

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Old 07-02-2017, 11:36 AM
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Car: 1991 Trans Am
Engine: L31, LT4 hot cam
Transmission: T5
Axle/Gears: 3:43 LSD
EGR pipes, header install
Chasing a vacuum leak and trying to get my head around a header install. Car is a 5.0 TPI with hedman shorty headers (with no EGR provisions). Can someone kindly school me on how the EGR system is usually plugged up after headers are installed?

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Old 07-02-2017, 03:22 PM
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Car: 1983 Trans Am
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Transmission: Auto
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Re: EGR pipes, header install
One hose from the carb.off the PVC this is not my car down load a vacuum diagram check all hoses.

Last edited by Black_TA; 07-02-2017 at 03:24 PM. Reason: Wrong info
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Old 07-02-2017, 04:39 PM
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Car: 1991 Trans Am
Engine: L31, LT4 hot cam
Transmission: T5
Axle/Gears: 3:43 LSD
Re: EGR pipes, header install
thanks. So should be looking for a capped off hose.
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Old 07-02-2017, 07:43 PM
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Car: 84 TA orig. 305 LG4 "H" E4ME
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Transmission: upgraded 700R4 3200 stall
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Re: EGR pipes, header install
I think you mean the air injection system - air pump and valves and solenoids injecting air into the headers/manifolds and catalytic converter.
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Old 07-03-2017, 01:38 PM
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Car: 1991 Trans Am
Engine: L31, LT4 hot cam
Transmission: T5
Axle/Gears: 3:43 LSD
Re: EGR pipes, header install
thanks. Seems like I need to get intimate with my engine bay
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