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04-27-2006
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#1 (permalink) |
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Finally Got Into First Gear
BTK Beginner
Join Date: Mar 2005
Posts: 56
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zx10 exhaust flapper valve
i saw on a zx10 and some 636"s that there is a exhaust flipper valve in the ex pipe with cables hooked to it. What ios the purpose of this? I am very curious what its funtion is. How would the machine act if it was defective?
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04-27-2006
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#2 (permalink) |
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Cruising In Fourth Gear
BTK Intermediate
Join Date: Sep 2005
Location: Swampcountry, FL
Posts: 242
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That butterfly valve is supposed to maximize performance throughout the powerband. The position of the valve varies depending on throttle position, gear, and speed. I'm not entirely sure how the bike would perform if it were to malfunction; hopefully it defaults to an open position should it fail. I haven't had any probs with it yet.
However, once you dump the stock exhaust and replace w/ a aftermarket slip or full system that valve and servo mechanism are removed. Most systems come w/ a device that tricks the ECU into thinking the servo motor is still attached so that one's EFI light doesn't remain illuminated.
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Don't let the skies become unsafe!! http://www.flyussafe.org Kawasaki Ninja ichiban desu. |
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04-27-2006
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#4 (permalink) |
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Cruising In Fourth Gear
BTK Intermediate
Join Date: Sep 2005
Location: Swampcountry, FL
Posts: 242
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yeah, I've only seen them on the 05 or later 6R, 6RR and, zx10's.
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Don't let the skies become unsafe!! http://www.flyussafe.org Kawasaki Ninja ichiban desu. |
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04-28-2006
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#6 (permalink) |
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Needs A Real Job
BTK Expert
Join Date: Apr 2006
Location: The northeast!
Posts: 2,018
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Yamaha has been using a system much like the one on your bike for about 15 years. I think the FZ1000 was the first in NA.
It helps with exhaust flow and backpressure.
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1984 Ninja 900 (A1) To make it go faster I need to add more lightness! |
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