why use block off plates on 08zx10s???? - Kawasaki ZX-10R.net
 
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post #1 of 9 Old 12-01-2010, 12:51 AM Thread Starter
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why use block off plates on 08zx10s????

seems to me that there is no good reason why as far as dyno tuning goes
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post #2 of 9 Old 12-01-2010, 10:08 AM
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If you are using exhaust gas analysis, or even just a wide-band to measure air/fuel ratio, then the secondary air injection system needs to be blocked so that the exhaust gas measurement does not give a false lean reading. But, you don't need block-off plates to do that ... just plug the hose leading to the air suction valve.


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post #3 of 9 Old 12-01-2010, 10:58 AM
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Originally Posted by GoFaster View Post
If you are using exhaust gas analysis, or even just a wide-band to measure air/fuel ratio, then the secondary air injection system needs to be blocked so that the exhaust gas measurement does not give a false lean reading. But, you don't need block-off plates to do that ... just plug the hose leading to the air suction valve.



for sure when tuning this is a must. other wise you are letting fresh air enter the exhaust system when tuning, although supposedly when under full throttle the valve is closed but if your doing any sort of tuning on the bike its a must to have blocked off from the exhaust system
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post #4 of 9 Old 12-01-2010, 01:30 PM Thread Starter
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yes that i understand but if u look at the 08 system, there is no air being injected into the exhaust. vapors r pulled from the valve cover into the airbox only
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post #5 of 9 Old 12-01-2010, 01:37 PM
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yes that i understand but if u look at the 08 system, there is no air being injected into the exhaust. vapors r pulled from the valve cover into the airbox only
Not correct, the vapors are not coming from under the valve cover, those go directly to small port holes that are actually connect directly to the exhaust ports.
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post #6 of 9 Old 12-01-2010, 05:42 PM Thread Starter
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ok thnks garth. so would placing something into the hose coming from the air box do the same thing as block off plates?
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post #7 of 9 Old 12-01-2010, 05:44 PM
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you can take a piece of hose and connect both of the outlets of the valve cover together and then then block off the hole that goes into the air box
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post #8 of 9 Old 12-01-2010, 05:50 PM
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post #9 of 9 Old 12-07-2010, 09:34 PM
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Got my plates done,still pops a lil..O well it will help when i get a few more mods on it and dyno mapped..
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