Pod filters ultimately (just like any other filter) restrict airflow. I run mine dry, as even oiling them is more restrictive than running them dry. They are only there really as a token gesture against the worst of the crap trying to get in and destroy my motor.
The stock airbox for my setup is too small, and pretty much too small for anything other than an SP motor. The filters perform better than the airbox, but would probably perform better still in an HRC carb shield. (It's not really fair to call it an airbox.)
Fontyyy only runs his airbox if he has to, i.e. on quiet(ish) days where the open carbs are too loud. Other than that, it's open carbs on his '28 for top-end power, and that's what I want. My 250 is about screaming, not mid-range (although it's one of the strongest production 250's to ever run on GT's dyno - even with NO airbox!), but I guess it's nice that I have both top-end and grunt... oh, and noise.
Yes Fontyyy, the GP bikes may well be quiet coming towards you, and noisy going away from you with ramair, but they really do need every single hp they can get, and so yes form must follow function for them. As I am just a poser wannabe, I want my bit of top-end and the noise of the carbs and rattly clutch with no dampers!
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Andy.
NSR-WORLD.COM
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