Air Pump Deletion...please somebody explain...
Thread Starter
NCM Bash 2008-2018
Joined: Jul 1999
Posts: 9,036
Likes: 88
From: Granby, MA Talladega Super Speedway Vettes 4 Vets Ambassador
Middle TN Events Coordinator
Cruise-In 1, 3, 9. 10 & 11 Veteran
Air Pump Deletion...please somebody explain...
Hello if somebody could maybe explain this to me it would help a lot...
First off I have a 1990 so thus I have all this junk....the airpump, hoses, egr, etc etc.....
My question simple....I have seen many people deleting this stuff with that elimination thingy that most of the corvette places are selling.
1. What does all this stuff do?
2. How can we just delete it and not have problems with the car cause of it not being there/why did GM put it on in the first place. (dumb question huh.....why does GM put something useless on our cars! lol)
3. Can you still pass inspection without it? Especially MA and CA inspections....horah horah!
First off I have a 1990 so thus I have all this junk....the airpump, hoses, egr, etc etc.....
My question simple....I have seen many people deleting this stuff with that elimination thingy that most of the corvette places are selling.
1. What does all this stuff do?
2. How can we just delete it and not have problems with the car cause of it not being there/why did GM put it on in the first place. (dumb question huh.....why does GM put something useless on our cars! lol)
3. Can you still pass inspection without it? Especially MA and CA inspections....horah horah!
Racer
Joined: Jul 2004
Posts: 308
Likes: 0
From: Christiansburg VA
Those components are installed to help improve (reduce) emissions.
From another site:
The Air Pump
The air pump sends (or pumps) compressed air into the exhaust manifold and in some cases to the catalytic converter. The oxygen in the pressurized air helps to burn quite a bit of any unburned hydrocarbons (fuel) and therby converts the poisonous carbon monoxide into good old carbon dioxide.
A belt from the engine drives the air pump. It has little vanes (thin, flat, curved fins) that draw the air into the compression chamber. Here, the air is compressed and sent off to the exhaust manifold where it speeds up the emissions burning process. Stainless steel nozzles are used to shoot the air into the exhaust manifold, because they will not burn.
Some engines use a pulse air injection system. This system uses pulses of exhaust gas to operate an air pump that delivers air into the exhaust system.
From another site:
The Air Pump
The air pump sends (or pumps) compressed air into the exhaust manifold and in some cases to the catalytic converter. The oxygen in the pressurized air helps to burn quite a bit of any unburned hydrocarbons (fuel) and therby converts the poisonous carbon monoxide into good old carbon dioxide.
A belt from the engine drives the air pump. It has little vanes (thin, flat, curved fins) that draw the air into the compression chamber. Here, the air is compressed and sent off to the exhaust manifold where it speeds up the emissions burning process. Stainless steel nozzles are used to shoot the air into the exhaust manifold, because they will not burn.
Some engines use a pulse air injection system. This system uses pulses of exhaust gas to operate an air pump that delivers air into the exhaust system.
Last edited by DukeDiablo; Sep 2, 2004 at 10:53 PM.
Le Mans Master
Joined: Apr 2002
Posts: 5,726
Likes: 46
From: Waukesha WI
St. Jude Donor '15
Other than not passing a visual inspection, there are no downsides to removing all of the junk associated w/ the AIR system.
The ECM will be slightly off in its A/F calculations when AIR would normaly be engaged but not enough to worry about.
Dale
The ECM will be slightly off in its A/F calculations when AIR would normaly be engaged but not enough to worry about.
Dale
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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The AIR helps to get the cats warmed up and cooking faster, you will pass the sniffer so long as the engine is warmed up before the test.
Thread Starter
NCM Bash 2008-2018
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From: Granby, MA Talladega Super Speedway Vettes 4 Vets Ambassador
Middle TN Events Coordinator
Cruise-In 1, 3, 9. 10 & 11 Veteran
holycrap batman!!!! so your telling me...
holycrap batman!!!! so your telling me...
MY VETTE COMES WITH ITS OWN LIL SUPERCHARGER ON IT!!!!! LMAO
QUOTE: The air pump sends (or pumps) compressed air into the exhaust manifold and in some cases to the catalytic converter.
A belt from the engine drives the air pump. It has little vanes (thin, flat, curved fins) that draw the air into the compression chamber. Here, the air is compressed and sent off to the exhaust manifold where it speeds up the emissions burning process. Stainless steel nozzles are used to shoot the air into the exhaust manifold, because they will not burn.
Some engines use a pulse air injection system. This system uses pulses of exhaust gas to operate an air pump that delivers air into the exhaust system.
WOW and to think if we could only convert this thing...man somebody could patent something hmmmmmmm
MY VETTE COMES WITH ITS OWN LIL SUPERCHARGER ON IT!!!!! LMAO
QUOTE: The air pump sends (or pumps) compressed air into the exhaust manifold and in some cases to the catalytic converter.
A belt from the engine drives the air pump. It has little vanes (thin, flat, curved fins) that draw the air into the compression chamber. Here, the air is compressed and sent off to the exhaust manifold where it speeds up the emissions burning process. Stainless steel nozzles are used to shoot the air into the exhaust manifold, because they will not burn.
Some engines use a pulse air injection system. This system uses pulses of exhaust gas to operate an air pump that delivers air into the exhaust system.
WOW and to think if we could only convert this thing...man somebody could patent something hmmmmmmm
Last edited by XtremeVette; Sep 2, 2004 at 10:49 PM.
Intermediate
Joined: Jun 2004
Posts: 46
Likes: 0
From: Alliance Nebraska
I read a web page a few years ago where somebody did in fact, use their air pump to raise the air pressure going into their intake, How much I cant remember but it was enough to cause some detonation.. Claims you could defintely feel a difference but not as much as a production supercharger from what I remember..
Wish I still had that page..
Wish I still had that page..
Le Mans Master
Joined: Apr 2002
Posts: 5,726
Likes: 46
From: Waukesha WI
St. Jude Donor '15
...use their air pump to raise the air pressure going into their intake, ...
Dale
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Thread Starter
NCM Bash 2008-2018
Joined: Jul 1999
Posts: 9,036
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From: Granby, MA Talladega Super Speedway Vettes 4 Vets Ambassador
Middle TN Events Coordinator
Cruise-In 1, 3, 9. 10 & 11 Veteran
hey come on everybody!
everybody you gotta keep with me on this one.....say it with me now....
we all have superchargers stock on our corvettes
I mean if all the ricers can get away claiming they get 30 extra horses out of all those stickers they plaster on their cars....surely we can say oh yeh....we got superchargers stock on ours!
lol
too funny this is turning into!
we all have superchargers stock on our corvettes
I mean if all the ricers can get away claiming they get 30 extra horses out of all those stickers they plaster on their cars....surely we can say oh yeh....we got superchargers stock on ours!
lol
too funny this is turning into!
Last edited by XtremeVette; Sep 3, 2004 at 09:25 AM.
Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Originally Posted by vader86
The AIR helps to get the cats warmed up and cooking faster, you will pass the sniffer so long as the engine is warmed up before the test.
100% True. Once the cat is hot you are set. Pulling an injectore wire to helps at times.
Same thery.
Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Originally Posted by vader86
The AIR helps to get the cats warmed up and cooking faster, you will pass the sniffer so long as the engine is warmed up before the test.
100% True. Once the cat is hot you are set. Pulling an injector wire to helps at times.
Same thery.
Racer
Joined: Apr 2002
Posts: 353
Likes: 0
From: Tuscaloosa AL
First, you all have underestimated this little pump. I am an engineer and I can tell you that pump does in fact generate pressurized air, not on the same scale as a centrifugal blower or anything, but certainly enough to warrant an attempt at plumbing it into the intake.
Second, you don't have to spend all that money on an AIR pump delete bracket. Do what I did. Take the air pump assembly apart and simply remove the impeller vanes and then re-assemble it. Like a blower, if the vanes are removed there is almost no drag left. Then simply re-install your gutted pump back on the engine. You have to block off the exhaust manifold pipes and the pipe to the cat. Be forewarned, however, you must take your time because the only way to remove them without damaging the rest of the pump is the "break" them in place and then use a pliers to remove them. If you stay patient and take your time, it is very doable. Good Luck
Second, you don't have to spend all that money on an AIR pump delete bracket. Do what I did. Take the air pump assembly apart and simply remove the impeller vanes and then re-assemble it. Like a blower, if the vanes are removed there is almost no drag left. Then simply re-install your gutted pump back on the engine. You have to block off the exhaust manifold pipes and the pipe to the cat. Be forewarned, however, you must take your time because the only way to remove them without damaging the rest of the pump is the "break" them in place and then use a pliers to remove them. If you stay patient and take your time, it is very doable. Good Luck
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by SilverBeast
LIttle, if any.
With the vanes in, and fully functioning, the AIR pump draws very little power. The biggest advantage to removing the pump, if you don't care about the air, is to clean up the underhood area and gain easier access for maintance reasons.
RACE ON!!!
Pro
Joined: Aug 2000
Posts: 700
Likes: 1
From: Florida
LOL
Originally Posted by XtremeVette
everybody you gotta keep with me on this one.....say it with me now....
we all have superchargers stock on our corvettes
I mean if all the ricers can get away claiming they get 30 extra horses out of all those stickers they plaster on their cars....surely we can say oh yeh....we got superchargers stock on ours!
lol
too funny this is turning into!
we all have superchargers stock on our corvettes
I mean if all the ricers can get away claiming they get 30 extra horses out of all those stickers they plaster on their cars....surely we can say oh yeh....we got superchargers stock on ours!
lol
too funny this is turning into!
