Is EGR necessary?
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Over all, Having EGR is a plus on a street motor.
It allows more ignition timing/ compression ratio to be used without pinging.
Makes the car more drivable because of this.
It also reduces exhaust emissions ( Oxides of Nitrogen) NOX
EGR only works at part throttle cruise, so it does not effect full throttle power at all.
Disconnecting it will not make your car faster.
EGR is part of your car's overall fuel/ ignition system. If you remove it, you'll cause many more problems than any benefits.
In fact there really are no benefits to removeing it.
It allows more ignition timing/ compression ratio to be used without pinging.
Makes the car more drivable because of this.
It also reduces exhaust emissions ( Oxides of Nitrogen) NOX
EGR only works at part throttle cruise, so it does not effect full throttle power at all.
Disconnecting it will not make your car faster.
EGR is part of your car's overall fuel/ ignition system. If you remove it, you'll cause many more problems than any benefits.
In fact there really are no benefits to removeing it.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Over all, Having EGR is a plus on a street motor.
It allows more ignition timing/ compression ratio to be used without pinging. Makes the car more drivable because of this.
It also reduces exhaust emissions ( Oxides of Nitrogen) NOX
EGR only works at part throttle cruise, so it does not effect full throttle power at all. Disconnecting it will not make your car faster.
EGR is part of your car's overall fuel/ ignition system. If you remove it, you'll cause many more problems than any benefits.
In fact there really are no benefits to removeing it.
That's my opinion. So, I won't discuss how to take it off.
It allows more ignition timing/ compression ratio to be used without pinging. Makes the car more drivable because of this.
It also reduces exhaust emissions ( Oxides of Nitrogen) NOX
EGR only works at part throttle cruise, so it does not effect full throttle power at all. Disconnecting it will not make your car faster.
EGR is part of your car's overall fuel/ ignition system. If you remove it, you'll cause many more problems than any benefits.
In fact there really are no benefits to removeing it.
That's my opinion. So, I won't discuss how to take it off.
Member
Joined: Dec 2001
Posts: 289
Likes: 0
From: Winnipeg, Canada
Car: 1982 Trans Am
Engine: 350 Crate
Transmission: TH350
Axle/Gears: 3.23
I took mine off, but I just did it to clean up some of the vacuum lines running everywhere. Just did it to clean up clutter. It certainly won't do anything for performance to remove it. Some people don't like the black crud it puts back into your intake from the exhaust. Mine wasn't too bad.
My Q-Jet is non CC though, so it might have been easier for me to remove than you US guys. I basically removed the vacuum line running to it and plugged that off to prevent vacuum leaks. Then I unbolted the EGR from the intake, fabricated a block off plate from steel plate, and put the plate on with a new gasket.
My timing is about 10 degrees advanced and I haven't had any trouble yet. I'm always keeping my ears open for pinging though just in case. If it does ping, I'll just retard my timing a bit.
I guess with a CC q-jet you have a solenoid activate the vacuum for the EGR. I'm not versed in what to do in that situation.
My Q-Jet is non CC though, so it might have been easier for me to remove than you US guys. I basically removed the vacuum line running to it and plugged that off to prevent vacuum leaks. Then I unbolted the EGR from the intake, fabricated a block off plate from steel plate, and put the plate on with a new gasket.
My timing is about 10 degrees advanced and I haven't had any trouble yet. I'm always keeping my ears open for pinging though just in case. If it does ping, I'll just retard my timing a bit.
I guess with a CC q-jet you have a solenoid activate the vacuum for the EGR. I'm not versed in what to do in that situation.
Junior Member
Joined: Jun 2003
Posts: 20
Likes: 0
i dont have an egr either. i mainly didnt like the look of a million and one vacume lines running everywhere. theres no major benefits or downfalls to removing it besides you either have all the vacume lines that can create vacume leaks and you spend days tracing your lines to find the leaks.
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