K&N air filter

[r550s]

that is definitely the big difference - how much more willing the bike is to get up to the rev-limiter. It does make you wonder about the OE air filter - maybe it's fine when it's clean & new, but as Winger says (and I found out too) it can clog up so quickly. Re. the 4000rpm flat spot - did you ever measure your cam timing - I have a theory...

[winger]

I didn't for simple reason, 4000 is were the TUV emissions are done,most bikes have a blip around that mark,probably nowhere as noticable with a 150hp motor.
I used to use it as my personnel limiter and would change at 4 if i was pottering along,the PC got rid of it and it's pretty linear all the way to the redline with a bit more of a rush around 6.

I also use an unusal pipe setup i guess must have an effect,the plan this winter was to get another custom one made along the lines of the Arrow pipe 2-1-2,still waiting for some brave soul to try the Wunderlich offering.

[QED]

I didn't for simple reason, 4000 is were the TUV emissions are done,most bikes have a blip around that mark,probably nowhere as noticable with a 150hp motor.
I used to use it as my personnel limiter and would change at 4 if i was pottering along,the PC got rid of it and it's pretty linear all the way to the redline with a bit more of a rush around 6.

I also use an unusal pipe setup i guess must have an effect,the plan this winter was to get another custom one made along the lines of the Arrow pipe 2-1-2,still waiting for some brave soul to try the Wunderlich offering.

Have ordered a K&N with the part no.s you advised. Will fit over xmas. Think Ill use black silicon sealant to glue to the airbox top.

[nab 301]

some time ago (if i remember rightly - and these days that's getting rarer), a contributor to this board (or was it pelican?) took a well-justified dislike to the OE snorkel, and went to work with a tank-cutter - making two large holes near the restriction.!

Some how missed this but ....

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