Quote:
Originally Posted by choneofakind
(SNIP)
I will voice my thoughts here: pod filters are not the bane of a CV carb's existance. Turbulent flow is. CV carbs like smooth flow. So if you can figure out how to reduce the restriction in the intake but keep the air flow smooth, you'll be fine. These airboxes are so simple that I really am not considering resonance to be a major consideration. heck, the pregen was designed in the late 80's and back then the box was stuck on there just to hold the air filter, forget about optimizing intake pressure based on intake pulses  |
I would agree.
That's why gains shown on the dyno (not moving) are not necessarily repeatable at speed - when airflow is much more turbulent and creating a vacuum instead of pressure.
I also agree that the Ninja's airbox isn't an advanced design tuned for resonance, but it does provide a smoother flow into the carb inlets than pods do. Drilling holes in the back of the box, as recommended by Leo Vince, sounds like a good solution. The sides of the airbox would shield the intake flow from most of the turbulent air rushing by at speed (and creating a vacuum) and also shield it from heat coming off of the engine.