Popping on decel.... - Page 2 - KawiForums - Kawasaki Motorcycle Forums
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post #11 of 23 (permalink) Old 11-15-2012, 11:46 AM Thread Starter
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How does the Kleen air mod help? Won't that cause me to be leaner than I already am?


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post #12 of 23 (permalink) Old 11-15-2012, 11:48 AM Thread Starter
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What would be the quicker/easier way to fix this? Getting the stage 2 or shimming the needles? Money wise it's not a problem, whatever would be best.


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post #13 of 23 (permalink) Old 11-15-2012, 11:51 AM Thread Starter
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What all goes into installing the jet kit? I've read how to shim the needles, doesn't seem too hard although the only experience I've had with carbs is on a lawn mower. Can the jet kit be installed by myself or a shop?


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post #14 of 23 (permalink) Old 11-15-2012, 01:57 PM
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How does the Kleen air mod help? Won't that cause me to be leaner than I already am?
The kleen air delete mod will not make the bike leaner. It actually removes/blocks extra air. Many have done it with positive results.

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What would be the quicker/easier way to fix this? Getting the stage 2 or shimming the needles? Money wise it's not a problem, whatever would be best.
A lot of fine tuning can go into rejetting. Shimming is very simple and quick, no tuning required other than resetting the idle speed.

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What all goes into installing the jet kit? I've read how to shim the needles, doesn't seem too hard although the only experience I've had with carbs is on a lawn mower. Can the jet kit be installed by myself or a shop?
Adding a jet kit will require you to remove the carbs and manipulate the airbox for clearance, which can be a PITA the first go-round. Multiple tunes and test runs are par for the course for getting the jetting correct. It's not a one size fits all deal. You or a shop can install it, but not unless the shop has done Ninja 250 re-jets before, they tend to fumble at getting all the small details of it. For a proper re-jet, the bike needs to be dynoed to find the correct setting. For just a slip on, shimming works well.
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post #15 of 23 (permalink) Old 11-15-2012, 02:26 PM
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the jet kit is easy, theres a diy somewhere floating around.

if you are competent, it will be an easy task. taking the stuff off was probably more of a hassle than anything else

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post #16 of 23 (permalink) Old 11-15-2012, 03:34 PM
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Just buy the jet kit, they have done all the tuning for you. Getting rid of the Kleen air system will help a lot because it is really just an air injection system to dilute the exhaust for emissions. I have not done it on my wifes Ninja yet but I have done it on my Suzuki with good results. The popping is a lean condition. So before you rejet, go buy a K&N air filter and follow the stage 2 instructions. It is easy and you will be happy with the end result.
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post #17 of 23 (permalink) Old 11-15-2012, 03:43 PM
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Forget what I said about the Kleen Air system, after looking at it there are differences between this set-up and the one on my Suzuki. Leave it alone and just do the stage 2 kit with a K&N air filter and remove the snorkle.
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post #18 of 23 (permalink) Old 11-15-2012, 06:53 PM Thread Starter
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So for the jet kit I don't need to take it to a shop to have it done or tuned? I don't know much about carbs, can I do this myself?


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post #19 of 23 (permalink) Old 11-15-2012, 07:25 PM
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find the diy guide, read it. if you dont think you can do it yourself, get a shop or someone else to do it.

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post #20 of 23 (permalink) Old 11-16-2012, 07:43 AM
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It will be more difficult to remove the carbs then the actual re-jetting. If you can read you should have no problems http://www.dynojet.com/pdf/2193.pdf
Just remember, someone just like you assembled it the first time.
I have had good results with minimal tuning when the Dynojet instructions are followed. I think some people assume the instruction don't apply to their situation or they somehow know better. Dynojet ( or other jet kits) test out the product with a chasis dyno and then package it all together for you, so unless you live at some crazy altitude just follow the directions.

Last edited by Actonite; 11-16-2012 at 07:47 AM.
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