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C4 Fuel, Emission Control, and Exhaust Systems

Air pump system removal (1/5)
 4/9/19 3:44am
Soren
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, - Denmark

Vette(s):
Corvette C4 1990 Convertible


Joined: 3/4/2019
Posts: 1

Hi,
I have a 1990 L98 Corvette and would like to remove the air pump/smog system as it seems to me as the system does not really contribute to anything else than less space in the engine compartment. Engine control does however give alarm if removed. Any tips in how to fix this?
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Re: Air pump system removal (2/5)
 4/10/19 11:38am
Atchafalaya
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Atchafalaya Basin, LA - USA

Vette(s):
Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe


Joined: 3/20/2009
Posts: 511

Too many emission/computer related components to remove....unless of course you are planning on a full engine and tranny resto sans electronics of any sort.
Re: Air pump system removal (3/5)
 4/17/19 12:54pm
rrobbo43
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Bakersfield, CA - USA

Vette(s):
1988 Coupe


Joined: 1/2/2010
Posts: 3

I bought my '88 new and removed  the system 23 yuears ago with no problem
Re: Air pump system removal (4/5)
 6/15/19 7:28am
AlabamaBigDog
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decatur, AL - USA

Vette(s):
1985 C4 Corvette


Joined: 6/15/2019
Posts: 1

85 corvette, I've completely De-smogged the entire engine compartment, Air pump gone exhaust manifold capped off, all hoses piping, valves removed. Also disconnected the EGR valve. I will remove the EGR down the road if and when the intake is removed.

I'm looking for options to deal with ECM related issues related to fuel ratio's etc..

WHO can recommend next step? I just want the engine to run as efficiently as possible with out the 20lbs of garbage weighing it down,

Re: Air pump system removal (5/5)
 6/18/19 10:00am
Gofaster
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San Dimas, CA - USA

Vette(s):
1990 Vette stock L98 48,500 orig.miles as of 5-7-2019


Joined: 5/7/2019
Posts: 1

AlabamaBigDog said:

85 corvette, I've completely De-smogged the entire engine compartment, Air pump gone exhaust manifold capped off, all hoses piping, valves removed. Also disconnected the EGR valve. I will remove the EGR down the road if and when the intake is removed.

I'm looking for options to deal with ECM related issues related to fuel ratio's etc..

WHO can recommend next step? I just want the engine to run as efficiently as possible with out the 20lbs of garbage weighing it down,