I am about to change out my exhaust --headers, new cats, custom true dual setup. How important is the EGR as far as performance, drivability, and what will the computer do if I take it off?

The cats are car sound, they come with capped air tubes so that you have the option of using them. I have heard that cats don't last as long if you remove the air injection, is this true? Is there any benefit to be gained by removing the air injection?

 

Your computer will give you a fault if you remove the EGR, unless you get or make a custom chip. I couldn't tell you if removing it gives you a performance increase.

Removing the AIR system will get less air to the cat, which may accelerate plugging especially if you are running rich. Most people who remove one usually remove both. Don't do it if you live in an emissions testing state or county.



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92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Richmond 3:42 gears, Torsen HD Posi
Sights & Sounds:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers. Z28 grille w/aftermarket lights, MacEwen whiteface gauges
NEXT UP: TBI & Suspension mods

 

I removed my EGR for awhile and never received any codes. Same for the entire AIR system.

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1989 IROC-Z 5.7L
NOS 5151 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System