K&N FILTER Mixed messages - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 38 (permalink) Old 02-05-2012, 02:48 PM Thread Starter
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K&N FILTER Mixed messages

I was told that I couldn't replace my oem filter with a K&N filter unless i buy an air kit.
I was also told from the dealer that I would have to install a power commander. Can anyone shed some light on the matter??
I already purchased the filter and it didn't say anything about adding things.
Any information would be helpful.
Thanks.
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post #2 of 38 (permalink) Old 02-05-2012, 02:52 PM
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If you don't change the muffler/exhaust, you don't have to add a power commander. I've been running the K&N in my 900 for about 12000 mile, with a stage one baffle removal on the standard pipes, and not had any issues....

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post #3 of 38 (permalink) Old 02-05-2012, 03:21 PM
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Changing to aftermarket exhaust pipes is going to cause free flowing exhaust and scavenge fuel out the cylinder, causing a leaner condition in the cylinders and will need more fuel mixture on the next intake to compensate, the stock pipes have a lot of back-pressure to them and create a richer and hotter condition in the cylinders thus the next intake can use less fuel, the power commander is needed to add more fuel when going aftermarket pipes, by putting on a free flowing K&N air filter only is not going to matter in my opinion as long as you keep the stock airbox and stock pipes.
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post #4 of 38 (permalink) Old 02-05-2012, 03:24 PM
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Quote:
Originally Posted by tamedby_1 View Post
I was told that I couldn't replace my oem filter with a K&N filter unless i buy an air kit.
I was also told from the dealer that I would have to install a power commander. Can anyone shed some light on the matter??
I already purchased the filter and it didn't say anything about adding things.
Any information would be helpful.
Thanks.
No need to buy a fuel processor from changing to a K&N, and no you do not need to buy an air kit to do so. The guy is just trying to get you to spend more money.

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post #5 of 38 (permalink) Old 02-05-2012, 11:50 PM
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Agree, they are wanting to sell you more stuff. I have a full de-baffle (stock exhaust) and a K&N on the stock air box, and the bike is running great.

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post #6 of 38 (permalink) Old 02-05-2012, 11:52 PM
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I changed my stock pipes and installed some Cobra longs and went to a K&N filter in a stock air box with a Kuryakyn cover without a processor, but later down the road I added a Cobra FI2000R fuel processor because I was getting more popping than I cared for. The processor was a pain in the ass to get it set right, so I opened up the fake vents on the Kuryakyn cover to create more air flow and than it was alot easier to set up the processor and my bike runs alot smoother. I wish I would have spent the extra $ and bought a PC.

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post #7 of 38 (permalink) Old 02-06-2012, 08:50 AM
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if you opened up the fake vents in that cover then you are in effect running without a filter....hope you have not run it this way for long.....if you did i can see a excessive oil thread soon..
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post #8 of 38 (permalink) Old 02-06-2012, 09:00 AM
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Just wondering, do the 900's have the air filter on the left side or right side on stock setups?
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post #9 of 38 (permalink) Old 02-06-2012, 09:08 AM
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right side.....left side (where the second airbox is on a 1500) is where the coils are
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post #10 of 38 (permalink) Old 02-06-2012, 09:52 AM
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Quote:
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if you opened up the fake vents in that cover then you are in effect running without a filter....hope you have not run it this way for long.....if you did i can see a excessive oil thread soon..
I opened the 6 fake slotted vents on the front side of the kuryakyn cover to create more air flow to my K&N air filter that is still in there. I backed up the slots inside the box with a screen so bugs wouldn't be a problem either. I call this my poor mans air breather, but sometime down the road I would like to add a hypercharger. So after 14k of running like this and no problems, I don't think your gonna see that excessive oil thread anytime soon. I'm sorry if I wasn't completely clear on the details, but I hope this clears it up for you!

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PC5 W/ignition
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Leather saddlebag chaps
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