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when fitting the K&N filter should you take out the snorkel in the airbox? or leave it in?... I've put a quill end can on, dynojet kit and K&N filter.. goes like stink in gears 1-4 but when in 5th & 6th at about 12,ooo rpm it won't pull through. could this be because the snorkel has been removed?



we've had a play around since.. re-balanced the carbs, adjusted the mixture screws and lowered the needles one notch from what dynojet recommend.. As the re-dyno run showed the bike to be running rich up to about 10,000 rpm

We're contemplating cutting the snorkel back a bit to allow that little bit more airflow.. but canot take it out completely as we feel the air flow above 100mph must be pressurising the airbox too much and means the bike won't pull through.

i'd be interested to know from any of you that have tried a few tweeks (k&n, dynojet and end can improvements) and what troubles you may have had, or quick wins..

The bike sounds great by the way... Just it runs a bit rough through the rev range until it's fully on song

I think it's a bit more responsive in the mid range - but on the dyno runs i've only gained from 60.15 to 62.8 hp. the bike was spot on fueling wise before i started,and now it's not as smooth. To be honest i wish i'd never started messing around, butnow the dynojet's in it's too late so we're trying to make the best of things.Tadpole

mst will tell you put stock filter back in just as good if not better than a K&n

Cheers for that..

how much time did you spend trying things before it worked itself out?

I take it you have a race can on yours as well then.

We've lowered the needles to the lowest setting but we only placed one washer on top of the needles as not really any space left on the dynojet needles.. it kept falling off.. unless it's worth the 2nd one.
the mixture screws about 2 turns out and carb's balanced..
we've kept with the 96 main jets

did you try the K&N 1st or did you keep the standard filter in? I take it the snorkel stayed in as well then? or did you experiment like i've done, taken it out and had the same problems.. it's around 110mph it started having problems but at lower speeds it sounded better and appeared more powerful..

I'm curious to know from anyone else who's tinkered and found an answer...

Are you doing this with an end can on stock headers?

if so, the Dynojet is overkill and I would be surprised if you ever get it sorted. At most some end can's need a better main jet but not a needle change and nearly all just need a mixture tweak. The BHP gain is more likely the dynojet kit than the can.

End can's are for noise and very few, very few make power...... save your pennies and get a full system for it or go back to normal and get it running smooth again.

MM!