ATV Connection Magazine

K&N air filter or UNI-filter? (aka for my Polaris SP450)

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Posted by: OhHell

Stay with some type foam filter.
K&N probably flows a little better but lets more dirt pass.
Some will say a K&N will filter just as well but I have seen to the contrary.

Posted by: Speedwerx

We use k&n on all of our machines. We havn't tested the uni's but we have tested similar units and in the feild there is not a differance between the 2 you may notice a 1/2 hp on the dyno if that but IMO I highly doubt you would notice a differance from uni to k & n or k & n to a uni. Both filters will need to be cleaned time and time again.

Posted by: Speedwerx

The dynojet kit will come with a complete set of instructions. If you have any ?'s from there you can contact them or us.

Posted by: RticKwad

Well I have been learning alot from others in
these forums and never really got all the info
I need on this subject. Which would I get more
power/boost K&N or UNI or some other?

I have heard one is better than the other but
issues if it gets wet and the life of the air filter.
I think you can just clean the K&N and it lasts
a life time, right?

Your thoughts, opinions, suggestions, please
advise!

Many thank!

R'

Posted by: RticKwad

Yea, I didn't really know that I needed the Dyno Jet kit to compliment it.
I have noticed throttle response difference on just running the K&N, I like it.
So what would I need to do if I buy the Dyno-jet kit? Do instructions come with
it on dialing my carb? FYI, I am in the mid-atlantic region on east coast, no high
elevation.

Regards,

R'