Hi,
I'm sorry that you've had so much problem with getting your max to perform
adequately. All that I can add is what I would do were I in your shoes. Take
my advice for what you're paying for it, if you like.
Cardinal Rule: Always change only one thing at a time! (Now if only I always
followed my own advice...)
1. Return EVERYTHING BUT THE EXHAUST to original specs - airbox, jetting,
filters, carb settings. This allows you to see what the effect of each
change will be.
2. Change the filters and see what happens. (Probably not too much, but who
knows?)
3. Adjust the carbs w/o changing jetting, and see if you can get the bike
dialed in that way. Since, as I recall, you've just changed the cans w/o
replacing stock exhaust piping, you may not even need a jet kit to make the
kind of torque and midrange you want.
4. If you find you need jets, go to a stage 1 or equivalent rather than a
stage 7. It is my impression that without really substantial mods such as
cam and displacement increase, the stage 1 should be sufficient. This is
particularly true if you're not going for ultimate top-end hp where the most
important factor is VOLUME of mixture rather than VELOCITY of mixture. For a
torquer approach, always insure that the air is going fast enough to
properly mix w/fuel and fill the cylinder. When you're constantly at 9000
rpm for about 10 secs, air velocity isn't much of a problem. On the street,
where you're going up and down the rev range, making sure the air is
traveling fast enough is much more important. The stage 7 is designed to
insure adequate fuel flow with higher volumes of air than you're using with
your setup. When you dump in the wrong amount of fuel at the wrong time all
you end up with is poor performance. If you've been on the horn to the K&N
guys, I'm surprised they didn't suggest this.
Best,
Sat Tara Khalsa
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