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K&N Air Filter

Apart from the fact you can clean the K&N Air Filter. Does it improve engine performance over the stock filter?

Steve
Hi Steve,

There is no noticeable difference in the performance whilst you ride. A dyno may pick up the odd half a hp increase.
What you do get is a nice increase in induction noise and a filter that will last 1,000,000 miles if maintained correctly.
The maintenance issue was why I wanted the change. If you want an instant increase in usable performance do the 15T front sprocket MOD.

don't you need the power commander to use a k&n filter.. for keeping the engine from running lean??

You won't need a power commander to install the K&N.

Nelly
 
It will make the bike more noisy?
What tone are we talking here, - hissing, bass?
The induction noise get a bit deeper and at high revs 6500 growls a bit. It does not change the riding experience. I actually like the quite exhaust note.

Nelly
 
If you have an aftermarket exhaust and a PCIII, you should get a K&N.

When I installed the K&N filter, it leaned out my fuel mixture so much that I had to change the PC map.
 
dont you need the power comander to use a k&n filter.. for keeping the engine from running lean??

No !!!!! im guessing a few will argue with me but the simple answer is "no the bike's EMS resets itself so it isnt and issue"...Thats a direct quote from a very good mate of mine and head mechanic at TopGun Yamaha :thumbup:
 
No !!!!! im guessing a few will argue with me but the simple answer is "no the bike's EMS resets itself so it isnt and issue"...Thats a direct quote from a very good mate of mine and head mechanic at TopGun Yamaha :thumbup:

Only the 07+ have O2 sensors, and thus self adjusting ECU's.

On all the models(european atleast) you can adjust the CO settings to adjust fuel mixture, but it doesn't do it by itself.
 
If you have an aftermarket exhaust and a PCIII, you should get a K&N.

When I installed the K&N filter, it leaned out my fuel mixture so much that I had to change the PC map.

I have a K&N Filter, Two Bros Carbon Exhaust,and a Juice Box controller. This set-up works well for me:rockon:
 
I would've gotten the juice box, but I bought the bike with the TB's and the PCIII already installed :)

You can't beat that. I got a great deal on the Two Bros after purchasing the Two Bros exhaust.:thumbup:
 
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