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Took my cb450k7 out today and couldn't get it over 45 mph. It reacted great in 1st 2nd and 3rd, but I had very little power in 4th. I put on k and n air filters. Do I need new jets for my carbs or can I just adjust?
I bought this bike in the spring and have been fixing up since. It wasn't running, had no spark. It's my first bike and my first time wrenching. I gotta say she's beautiful.
 

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Sensei
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depending on the particular K&N filter you could be leaning out (not oiled or too big) or flooding (too small or over oiled) at higher revs....(I have better results with the foam pods).....What size main jet do you have in?

Better/easier yet...take them off and try it out....
If it runs better you were flooding/rich....worse, you were already too lean...
 
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