there is a possibility.
check your spark plugs, if they are black or close to black, you
are running rich, so MAYBE you can afford to change to k&n
without having to re-jet.
If plug is white-ish, you already running lean, more air is the
last thing you want.
If its brownish tan, then you are just rite, don't do anything to
your setup.
Furthermore, having more air intake, your exhaust, theoretically,
should also allow for more out-going flow, otherwise, the advantage
of having a higher volume of air intake will not be so noticeable
due to the greater backpressure of your existing setup.
