I don't think there is supposed to be a splashguard there. The resonator hole was only designed for the stock airbox to stick out maybe an inch or two, not half a foot or more, like a cai does. If you wanna protect your filter(and engine) from water, you could wrap the filter, or you could by a by-pass valve. Or just do what I do, take the whole cai piping out, and put the filter right on the throttle body, when it's raining out.