air pump question

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09-14-07, 01:59 PM

itschrisfoo

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air pump question

does the air pump have anything to do with the 5th and 6th ports opening

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09-14-07, 02:02 PM

davemo

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it depends on what series your car is

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09-14-07, 02:03 PM

davemo

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and possibly what kind of exhaust you have

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09-14-07, 02:11 PM

itschrisfoo

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i have a s4 and it has no air pump and stock exhaust

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09-14-07, 03:25 PM

dw89s5

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the air pump causes the 5th/6th ports to open on an s5
s4 uses exhaust pressure

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09-14-07, 05:09 PM

red_s5_fc3s

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So on an S5 is it necessary to hook up the airpump to the catalytic converter? I've got my airpump attached to the engine still, but I don't have the airpump connected to my exhaust. Are my 5th and 6th ports still opening up at around 3800 rpms or does that change things?