I'm curios, do you know for sure if the "ram air" intake does anything? is it a value added mod? ive seen a few guys doing this with various funnels, tubes, etc..but yours looks promising. my thought is that it would be very difficult to design. or rather, it would have to be a precision designed manifold. If one simply uses a funnel-into-tube (like i've seen some guys do) the result would be not an increase in CFM, but a decrease due to the "toilet bowl effect"; a swirling eddie of air at the narrowing, without a properly calibrated volume reduction. How does yours perform with and without?