Uses of airpump?
12-14-02, 11:22 PM
#1
Uses of airpump?
i was just looking at the setup of the airpump (S4 N/A), and it looks like it just goes to the ACV. I was under the assumption that the airpump was needed to supply air to the Catalytic converter, but the air tube going to the cat connects to the back of the LIM. If I were to remove the 6th port actuators and remove the actuators, could the airpump then be removed? I guess my question is that I need to keep my cat, so If 6th port actuation isnt an issue for me, but having a cat is, can I still remove the airpump?? Thanks
12-14-02, 11:42 PM
#2
Re: Uses of airpump?
Originally posted by Rxmfn7
i was just looking at the setup of the airpump (S4 N/A), and it looks like it just goes to the ACV. I was under the assumption that the airpump was needed to supply air to the Catalytic converter, but the air tube going to the cat connects to the back of the LIM. If I were to remove the 6th port actuators and remove the actuators, could the airpump then be removed? I guess my question is that I need to keep my cat, so If 6th port actuation isnt an issue for me, but having a cat is, can I still remove the airpump?? Thanks
i was just looking at the setup of the airpump (S4 N/A), and it looks like it just goes to the ACV. I was under the assumption that the airpump was needed to supply air to the Catalytic converter, but the air tube going to the cat connects to the back of the LIM. If I were to remove the 6th port actuators and remove the actuators, could the airpump then be removed? I guess my question is that I need to keep my cat, so If 6th port actuation isnt an issue for me, but having a cat is, can I still remove the airpump?? Thanks
Jarrett
12-14-02, 11:46 PM
#3
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The actuators are positioned by exhaust pressure. At 3,800 RPMs, it should make 3.5 psi of pressure to open the auxilary ports.
There should be line coming from the intake manifold, to a check valve, then the split air pipe goes to the catalytic converter. To make it easier to sort out the lines, look for the line at the cat and follow it back up to the intake.
There should be line coming from the intake manifold, to a check valve, then the split air pipe goes to the catalytic converter. To make it easier to sort out the lines, look for the line at the cat and follow it back up to the intake.
12-15-02, 03:18 AM
#5
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Re: Uses of airpump?
Originally posted by Rxmfn7
i was just looking at the setup of the airpump (S4 N/A), and it looks like it just goes to the ACV. I was under the assumption that the airpump was needed to supply air to the Catalytic converter, but the air tube going to the cat connects to the back of the LIM.
i was just looking at the setup of the airpump (S4 N/A), and it looks like it just goes to the ACV. I was under the assumption that the airpump was needed to supply air to the Catalytic converter, but the air tube going to the cat connects to the back of the LIM.
If I were to remove the 6th port actuators and remove the actuators, could the airpump then be removed? I guess my question is that I need to keep my cat, so If 6th port actuation isnt an issue for me, but having a cat is, can I still remove the airpump?
12-15-02, 08:26 AM
#7
Re: Re: Uses of airpump?
Originally posted by NZConvertible
S4's use exhaust backpressure to operate the 6PI system, not the air pump. If you keep the stock cat you need to keep the air pump, because it requires secondary air injection to work properly. If you ditch the cat or use an aftermarket cat that doesn't need air injection you can ditch the air pump and the ACV.
S4's use exhaust backpressure to operate the 6PI system, not the air pump. If you keep the stock cat you need to keep the air pump, because it requires secondary air injection to work properly. If you ditch the cat or use an aftermarket cat that doesn't need air injection you can ditch the air pump and the ACV.
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12-15-02, 09:05 AM
#8
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You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
12-15-02, 02:41 PM
#9
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Originally posted by HAILERS
You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
12-15-02, 04:22 PM
#10
Former Moderator. RIP Icemark.
Originally posted by DJChunter
I passed with NO air pump and NO AVC.. only a cat.. if you do a search on me you will see the numbers i passed with.. Dave
I passed with NO air pump and NO AVC.. only a cat.. if you do a search on me you will see the numbers i passed with.. Dave
12-15-02, 05:19 PM
#12
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Originally posted by HAILERS
Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
12-15-02, 09:10 PM
#13
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You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
12-15-02, 10:51 PM
#14
Originally posted by HAILERS
You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
You will not pass emissions without the catalytic converter AND the airpump and ACV. They all work together.
That airpump puts out a max of four psi. Do you REALLY think that the amount of hp to drive that airpump is going to be felt when you remove the airpump??? No is the answer.
12-17-02, 02:55 AM
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Re: Re: Re: Uses of airpump?
Originally posted by Rxmfn7
I have a Bonez High-flow cat. It does have the little nipple to connect to the air supply tube though. Are you saying that with this cat it is not necessary to still keep the airpump?
I have a Bonez High-flow cat. It does have the little nipple to connect to the air supply tube though. Are you saying that with this cat it is not necessary to still keep the airpump?
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