[Airbillster]

I didn't know this was a K&N prototype, Steel blue posted a reply on my Engine Performance - True Cold air Intake Post...Mine also makes great sound and the K&N plus the 3" PVC gives it power to spare! Question on your design, everything I've read says a tyfoon or twisting air doesn't do much good on the intake, where it needs it is on the out to create a larger volume. Your system is made of metal, isn't that a conductor of heat and what keeps the heat from the engine compartment from super heating the air going into the turbo? We all know about the heat problems in the engine compartment. I also have a real concern with your placement of the pcv hose going into the side of your intake as the turbo sucks air, isn't it also sucking oil into the turbo? I've seen how much oil come out of that hose without suction and can only imagine what the suction would do.

My design is made from looking at systems like yours as well as metal box systems. That is how I came up with this design, plexiglass and PVC plastic (doesn't conduct heat)insulated with heating duct insulation from the filter to the turbo intake as well as the box itself. It is sealed at the top and sides so the only air allowed is from the fender and hood scoop, outside air. Quantity of air is important, but more important is QUALITY, the cooler the air going in the better the performance and the temp. difference between the engine compartment and the air box on mine IS signifigant! Also the pcv filter is inside the box and any oil is caught by the filter element, easily changed. I'm working on making mine purtier but I felt function came first.

I can see how you can call yours a VOLUME air intake, but a cold air intake, no. Also I recommend you seriously consider fixing the pcv issue, hot oil can ruin a turbo! [8)]