[2008+] Hey guys what's the best air filter out there I am thinking to replace mine. - Kawasaki Ninja 250R Forum
 
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post #1 of 9 (permalink) Old 03-23-2013, 05:07 AM Thread Starter
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Hey guys what's the best air filter out there I am thinking to replace mine.

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post #2 of 9 (permalink) Old 03-23-2013, 06:22 AM
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post #3 of 9 (permalink) Old 04-05-2013, 05:13 AM Thread Starter
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I habe a two bros slip on do i have to do something to the carbs in this case

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post #4 of 9 (permalink) Old 04-05-2013, 05:52 AM
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Originally Posted by gargola250r View Post
...I have a two bros slip on do i have to do something to the carbs in this case
Shimming the needles is recommended for slip on exhaust.

Note: Most filters will flow air better than the stock OEM Filter. These filters are ideal for shimming and re-jetting modifications and may offer small performance gains.~
https://www.250r.net/forum/showthread.php?t=2594

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post #5 of 9 (permalink) Old 04-06-2013, 08:22 PM
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If you do shim the needles remember to re-sync the carbs after!!

In fact, ANYTIME you remove or make ANY changes to the carbs it is important to re-sync them. Otherwise you may end up with performance issues.

I have come to terms with the possibility of dying while riding, life has a 100% death rate. I would rather live having fun and end up dead in a motorcycle crash than never do anything fun because it's dangerous and I might get killed. No one makes it out alive anyway. - From a friend on another forum, used with his permission.
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post #6 of 9 (permalink) Old 04-07-2013, 06:07 AM Thread Starter
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How do i sync the carbs

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post #7 of 9 (permalink) Old 04-07-2013, 08:14 AM
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If you do shim the needles remember to re-sync the carbs after!!

In fact, ANYTIME you remove or make ANY changes to the carbs it is important to re-sync them. Otherwise you may end up with performance issues.
This is not entirely true. Adjusting the idle, changing the fuel filter, adjusting the throttle cable, replacing the needles or shimming does not require synching the carbs. You can often change jets without it too. If the bike is tuned properly and has no running issues, synching the carbs is not necessary. It's one of those things you shouldn't need to do, but on a rare occasion it may be needed.

Carburetor sync is matching the butterfly valves in the two carburetors so they both open the same amount. Do a carb synch when you disconnect the pair of carbs, make adjustments to the idle mixture screws or throttle stops, adjust the float bowls and after a valve adjustment.

These are signs that your carbs may need to be synched. Less power, bogging at various rpms, and poor performance. The most obvious sign is the lack of a steady idle point, the engine will rev high at times and want to die at other times. This is due to your carbs not matching one another, it can also be the idle mixture screws not being set properly or a possible vacuum leak.
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post #8 of 9 (permalink) Old 04-07-2013, 08:28 AM
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Quote:
Originally Posted by gargola250r View Post
I have a two bros slip on. Do i have to do something to the carbs in this case?
Quote:
Originally Posted by gargola250r View Post
How do i sync the carbs


If all you did was add a slip on exhaust, you need to do nothing, however shimming the needles with (2) 3mm washers each and removing the snorkel is recommended.

If your bike is running fine and you have no running/performance issues, a carb synch may not be necessary.
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post #9 of 9 (permalink) Old 04-13-2013, 11:06 AM Thread Starter
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Thanks that was helpfull . Good information

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