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Cone filters: How do you get cold air?


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I just upgraded to a MAF adapter and 3" cone filter. Excellent top-end performance with it, but lost a bit on the low-end. I was wondering if this comes from the increased flow of warm air into the intake. My filter is cradled in the bottom end of the airbox like so:

 

8324cone_filter.jpg

 

So basically I think it's getting cold air from the vent in the bottom of the box, but pulling in hot air from the top. What I could do to cool the air around the filter apart from cutting a scoop and relocating the filter to the spare tire bay?

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Back when I had my Unifilter on, I used some old heater ducting to scoop air from under the front bumper and ran it into the engine compartment through that hole in the fender that the stock intake runs through. This dumped cold air onto the filter at speed, without incurring the problems that come with a true ram-air or cold-air intake (namely, sucking water).

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