A 90 degree bend between the plenum and tb mounting flange to point the tb forward and move it forward, to provide more room for a filter with greater surface area, clamped directly to the tb.
It won't run as well with heated underhood air, but it will eliminate most of your problems and be very clean. How much power do you need?
That would solve some problems, but space is at such a premium the accordion hose is shaped like a cery compact question mark. I do not believe I can find a 3" bend that will fit the available space. How about a triangle shaped box? Gotta think about this.
How much power? I think I would be happy with 150, especially if it retains the killer low end from last year.
Andrew, when I heard that horn, your experience flashed through my mind and I knew exactly what the problem was. While the problem is before the intake, I find it strange it did not manifest itself last year with the 1 1/2" runners. People who criticize the OEM efforts need to try walking a few feet in their shoes. Over the years I have seen several announcements that someone was developing a replacement intake for the Duratec, but the only ones that see the light of the market are full race or turbo applications. Why do you suppose that is?
I'm going to gather up some 3" or 3 1/4" intake hose that has lots of curves in it and try to piece together an intake hose.
I made a run this morning. It was my "stock" setup with the end cut out of the filter housing. The engine ran fine, but the run took 7.6 seconds. Next: remove the housing and run the hose and naked filter.