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Old 08-17-2009, 1:35 PM   #1
 
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What is the air suction valve for?

I always wonder what that plugged vacuum hose was supposed to go to, well I found out but what is it for?

Here's a link to a exploded diagram for the device. #5 is the plugged line that is left

Ronayers.com Fiche Desktop Motorcycle Honda 1996 CBR900RR AIR SUCTION VALVE
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Old 08-17-2009, 1:43 PM   #2
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Re: What is the air suction valve for?

Originally Posted by unfetteredmight View Post
I always wonder what that plugged vacuum hose was supposed to go to, well I found out but what is it for?

Here's a link to a exploded diagram for the device. #5 is the plugged line that is left

Ronayers.com Fiche Desktop Motorcycle Honda 1996 CBR900RR AIR SUCTION VALVE
Looks like a PAIR system to me.
Sucks air from the airbox and injects it into the exhaust ports.
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Old 08-17-2009, 1:53 PM   #3
 
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Re: What is the air suction valve for?

Originally Posted by bladeracer View Post
Looks like a PAIR system to me.
Sucks air from the airbox and injects it into the exhaust ports.
Oh, so it's an air injection system then, part of emissions, reduces nitrides of oxides in the exhaust if I remember correctly.

No effect on performance then, cool, thanks.
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