I've been working on an air filter setup. I've come up with two options: simple and cheap and elegant and expensive. Simple/cheap is what I have mocked up in the picture below. I found a K&N filter that would fit over the lip on the end of the velocity stack and clamp down. I don't know how well the "ram tube" aspect still works with this kind of setup though. The other downside is the filter is too long and will interfere with the oil filler neck. K&N doesn't sell a shorter version of this filter so I would have to cut it down and re-seal it myself or move the oil filler neck. The idea would be to have two filters like this with one tapped for the IAT sensor. Total cost = $30 x 2.
The other option is more elegant but more expensive. I've been in contact with EFI Hardware in Australia, who makes my throttle body, and they have a IDA-style filter setup. I copied a few shots from their website below (I would have a taller filter). In this configuration the "ram tubes" should function as normal and I now have a common intake source to mount the IAT sensor. The downside is I'd have to order the intake kit (filter, base, and top), shorter velocity stacks, a TB-to-filter base adaptor, and potentially some spacers to get the filter base away from the fuel rail. Total cost quoted to me by EFI is $641! ($100 of that is shipping).
Comments/thoughts?